College is messing up my game

[sid3]

And I watch anime too

 

I might as well cut my penis off.

 

Aside from having one less thing to play with, doesn't sound like you'll be needing it anytime soon. Quit the video games and find somewhere to volunteer, you're bound to meet women.....I'm out

[Locust]

OK, I've spent way too much time on this problem and it's still not making any sense.

 

I know that -400(x+h)^2 uses the (x+h)^2 = (x2 + 2hx + h^2) formula.

 

So it expands to -400x^2 + 800hx + 400h^2

 

In the next step it's -400x^2 - 800hx - 400^2

 

Why did the signs change?

 

 

following properties:

 

 

For multiplication

(-)(-)= +

(+)(+) = +

(-)(+) = -

(+)(-)= -

 

Division

(-)/(-)= +

(+)/(+)= +

(-)/(+) = -

(+)/(-)= -

 

Operations.

-(-)= + so if you have -5(-1) = 5

(-)= - so if you have 5(-1) = -5

[somedude81]

More math magic from the book

 

Lim h->0

 

__h__

h√x+h+√x

 

Becomes

 

__1_

2√x

 

I would have written down 2√x

 

Why does the numerator h become 1 while the bottom h gets disappeared?

[Leigh 87]

Yup, it definitely blew up in my face.

 

Studying 2-3 hours a day? I don't have anywhere close to enough dedication and motivation to be able to do something like that. I simply can't stay focused on something I hate for that long.

 

 

 

WTF..

 

You cannot study for 2 - 3 hours a day?????????

 

Dude (SOME dude:lmao:) Look mate, I hate math too, so I am not doing a math degree!!!!!

 

I have to read/study for 2 - 3 hours daily for my social work degree.

 

2 - 3 hours is nothingg!!!!!!!!!!!!!

 

Man, and I have been lazy my entire life, and 2 - 3 hours is not a lot of study for me..

 

YOU, on the other hand, are doing something YOU HATE. Where as I am doing a degree I enjoy the majority of; I love to read about other culures and people, and how I can one day help them.

 

 

 

...I quit my science degree, because I did not have the highschool education to back me up, and I would have had to re learn everytihng before going to college (math anyway)

 

 

......I would have hated doing math for hours a day, it would have depressed me too.

 

 

 

.............Would you ever consider just being a science or IT teacher?

 

 

Teaching does not require hard math here in Aus, the degree....

[Leigh 87]

I do not understand why someone doing a science/math degree with difficult math in it, refuses to study for 2 - 3 hours daily...................

 

Even I know that math is all about practice practice practice...

 

I am not smart on the area of the maths and science.... but I managed high distinctions in chemistry, when I got into college...

 

I literally spend ALL My time studying!

 

I ate breakfast, studied; ate lunch and went on love shack, back to studying....

 

Go to the gym/on a run, then straight back to study.

 

Doing the damn chemistry problems over and over and over...

 

WITH the help of a tutor, and studying as a 9 - 5 job, I did VERY WELL.

 

....I still got plenty of free time too, since I did not even work!

 

There were a few hours in which I could work out and relax and watch TV..........

[somedude81]

Uh, Information Systems is not a Science/math degree.

 

It's a computer/technology degree with some background in general business stuff.

 

If I wanted a science/math degree engineering or computer science.

 

The math I'm doing now, has no relevance in my major or what I'd be doing in my career whatsoever.

Edited February 18, 2013 by somedude81

[SmileFace]

Uh, Information Systems is not a Science/math degree.

 

It's a computer/technology degree with some background in general business stuff.

 

If I wanted a science/math degree engineering or computer science.

Well technically it is a Science/Math degree.

However it is mostly focused with computer and technology and business if that is what you decide your focus to be.

 

Plus you need the math courses for your degree and career since it helps build analytical skills and you can apply most math problems to your programming.

[Locust]

Is this expression written as

 

LIM h ---> 0

 

__h_______

h√(x+h) +√x

 

 

or

 

LIM h ---> 0

 

__h____

h√(x+h) + √x

 

Both are different

Edited February 18, 2013 by Locust

[somedude81]

Well technically it is a Science/Math degree.

However it is mostly focused with computer and technology and business if that is what you decide your focus to be.

 

Plus you need the math courses for your degree and career since it helps build analytical skills and you can apply most math problems to your programming.

Programming? That was nothing more than visual basic.

 

I think you're thinking about computer science.

 

My degree is:

Business Administration.

Concentration: Management Information Systems.

[SmileFace]

Programming? That was nothing more than visual basic.

 

I think you're thinking about computer science.

 

My degree is:

Business Administration.

Concentration: Management Information Systems.

I assumed you were a CIS major - which is what I studied.

[somedude81]

Is this expression written as

 

LIM h ---> 0

 

__h_______

h√(x+h) +√x

 

 

or

 

LIM h ---> 0

 

__h____

h√(x+h) + √x

 

Both are different

It's this one

 

LIM h ---> 0

 

__h_______

h√(x+h) +√x

 

Everything under h.

[somedude81]

I assumed you were a CIS major - which is what I studied.

CIS

 

Criminal Investigative Service?

 

[BehindBlueEyes]

Are you serious....There's men in their thirties that still play video games? .

 

 

Who in the hell do you think designs and markets video games? toddlers, teens and early twenties? NO! I bet most of them are designed by dudes in their 30's 40's and even 50's.

[SmileFace]

CIS

 

Criminal Investigative Service?

 

Exactly

 

I was actually going to get in Artificial Intelligence initially but my school didn't have it. Thats when I was like 18 and was hacking for fun and decided I needed to be in the CIA.bwhaha

[Leigh 87]

Somedude 81 - I think it is really stupid of them in the US, how they make you do HARD math for degrees where people DO NOT ever plan to use math again.

 

Sure you need the analytical skills, but you do not need to do super hard math to get that..

Sheesh... a lower level math should be enough to get you to think in terms of computers.

 

This is exactly why I dropped my food science degree - as a nutritionist, we would only need stats (in order to do your job well) Yet, they wanted us to learn MORE math, totally unrelated to food analysis.

 

You do not need to solve any type of equation for the nutrition or food science job, just be able to read and conduct scientific tests if you work in food research and processing.

 

No math whatsoever, besides reading graphs, which is stats only.

 

Yet in the US, food science students need calculas and even more advanced math.

 

..........It is like people who cannot do freakin calculus, are not seen as capable of doing their degrees at hand (that involve no math).

 

F*Ck.

 

Sorry, rant over.

[Leigh 87]

Right well then, sinceyour going for a job you would love and that would not involve daily math:

 

- if I were in your shoes, I would study not 2 - 3 hours a day, which you have already said you are not willing to do.......

 

- I would study SIX to 8 hours a day, in order to pass your very last bit of your degree!!!!!!!1

 

 

.....your almost there!!!!

 

 

Just have meal and toilet breaks, study until late, then come onto loveshack for half hour to an hour before bed.

 

I would not worry about exercise even, considering your THIS close to getting your degree, I would study all the time instead.

 

....Although without working, you could easily study all day, and still half half hour for a quick walk, and even time for loveshack when your finished studying for the day.

[sweetjasmine]

It's this one

 

LIM h ---> 0

 

__h_______

h√(x+h) +√x

 

Everything under h.

 

Okay, this one isn't so bad, but you probably already did some work to get to this point in the problem.

 

__h_______

h√(x+h) +√x

 

Here, you can cancel out the h in the numerator and denominator, which gives you this:

 

__1_______

√(x+h) +√x

 

which is where you plug in the zero (since you're evaluating for lim h -> 0) to get this:

 

___1____

√(x) +√x

 

=

 

1

2√x

 

Your mistake was in just removing h in the numerator and denominator. What you need to remember is that h/h = 1/1 = 1. When you cancel out the h, you can't erase the top half of the fraction.

 

If you're not sure, plugging in numbers and seeing what works can help you figure out whether you're right. For instance, if you weren't sure what to do when canceling the h in the numerator and denominator, you could play with it to see what's correct by making up your own simple fraction, like this:

 

h

h(x)

 

So say h = 2 and x = 3, just to pick some random numbers to plug in. If you plugged those into that fraction, you end up with 2/(2*3), which is 1/3.

 

Say you simplified that fraction the way you did, by crossing out the h on top and bottom and ending up with just x. All of a sudden, your value is 3. That can't be right, because it should be equal to the number you got before you tried simplifying it.

 

Say you remember that h/h should be 1. Now you end up with this:

 

_1_

x

 

Plug in your original numbers (x=3), and you get the same value that you did before you simplified -- 1/3.

 

I don't know if that's helpful to you. I find that doing this to check my algebra when things get messy is great, but it might be confusing to someone else.

 

It seems like your problem is with remembering the small rules. Those really matter and can trip you up, and I think a good tutor can really help you with this stuff. You seem to be getting most of it and getting stuck on the small bits. The good news is that you can do it, if someone helps you figure out which small rules you're still missing.

[SmileFace]

You need calculus for most business degrees. I think his work load is fair actually.

[Locust]

Okay, this one isn't so bad, but you probably already did some work to get to this point in the problem.

 

__h_______

h√(x+h) +√x

 

Here, you can cancel out the h in the numerator and denominator, which gives you this:

 

__1_______

√(x+h) +√x

 

which is where you plug in the zero (since you're evaluating for lim h -> 0) to get this:

 

___1____

√(x) +√x

 

=

 

1

2√x

 

Your mistake was in just removing h in the numerator and denominator. What you need to remember is that h/h = 1/1 = 1. When you cancel out the h, you can't erase the top half of the fraction.

 

If you're not sure, plugging in numbers and seeing what works can help you figure out whether you're right. For instance, if you weren't sure what to do when canceling the h in the numerator and denominator, you could play with it to see what's correct by making up your own simple fraction, like this:

 

h

h(x)

 

So say h = 2 and x = 3, just to pick some random numbers to plug in. If you plugged those into that fraction, you end up with 2/(2*3), which is 1/3.

 

Say you simplified that fraction the way you did, by crossing out the h on top and bottom and ending up with just x. All of a sudden, your value is 3. That can't be right, because it should be equal to the number you got before you tried simplifying it.

 

Say you remember that h/h should be 1. Now you end up with this:

 

_1_

x

 

Plug in your original numbers (x=3), and you get the same value that you did before you simplified -- 1/3.

 

I don't know if that's helpful to you. I find that doing this to check my algebra when things get messy is great, but it might be confusing to someone else.

 

It seems like your problem is with remembering the small rules. Those really matter and can trip you up, and I think a good tutor can really help you with this stuff. You seem to be getting most of it and getting stuck on the small bits. The good news is that you can do it, if someone helps you figure out which small rules you're still missing.

 

 

This is correct..

 

In some cases to do these limit substitution problem you might have to multiply by what is called the conjugate.

 

So if you have √(x+7) +√x then the conjugate would be √(x+7) - √x

It's the sign that change. My tip when you need to do the conjugate. If you plug in a number and it comes out 0/0 that is undefined, so you have to manipulate the expression so you won't have a 0/0 limit. When you get a 0/0 limit then most like you will need to do the conjugate trick. In this case you just had to cancel out the h and that is what sweetjasmine showed you.

[johan]

Speaking from experience, getting a girlfriend doesn't magically make life better.

 

Pretty much no matter what kind of girl you date, you are looking at a loss of time and a certain amount of freedom.

 

You will feel more stressed about school not less, because she will have a stake in what kind of results you get, too. Not only if she is considering a future with you, but also just because she will have standards you have to meet. The time commitments will require you to be more organized and focused than you are now.

 

And just like anything else you want but can't have, once you get it you find the reality doesn't quite match the fantasy. After some months the shine will begin to wear off, and you'll realize it's not a mythical woman creature you're with, but a human who has problems of her own. A good portion of those problems become yours to deal with as well.

 

Sex is good, but doesn't transform you. It isn't worthy of being a life goal of its own.

 

There's a good chance that the relationship will not work out, and when it comes apart, that can put a dark cloud over everything else going on in your life. This is more likely to happen the younger she is. It can put your life goals on the line. It's way easier to coast along in your career while you lose focus and recover than it is to try to finish up a degree in that state of mind.

 

No one wants to be alone, and the urge to have someone in your life is natural. But the reality of a girlfriend just isn't so wonderful that you'll ever feel you sold yourself short when you just put it aside for a while to make sure you got your degree and secured your future.

 

I've had plenty of girlfriends. Life with one or without one is still just life. Whether you have a woman in your life or not, your priority is the same: take care of your own affairs. This is what every mature, experienced guy who is not a total jackass will tell you.

[El Brujo]

I'm currently in my last real semester of college.

 

*snip*

 

And I'm now off to class.

 

It's likely you will be for the rest of your life. Everyone I know who's gone to college remains personally involved with the university system in some way for the foreseeable future, including those who let it take over their lives completely.

 

If I could turn oof my sex drive and desire for companionship I would. But its not possible.

 

If a Fleshlight won't do it for you, you could talk to a doctor about getting a prescription for either Lupron or Androcur. Those 2 drugs are not 100% effective at killing the male sex drive, and they have some scary side effects... but they may be worth a shot if there's no other way.

[Lonely Ronin]

Somedude 81 - I think it is really stupid of them in the US, how they make you do HARD math for degrees where people DO NOT ever plan to use math again.

 

part of its, because they want you to build logic skills, the other reason is they want you to be well rounded, so if you have to work outside your field you can.

[Locust]

To complete in this global economy with technology growing like crazy, having science and engineering background is a must. Of course math and science is not for everyone, but the idea is to get more people involved in that. One of the reason Obama want to fund more into science and math because its the key foundation in today's world.

[Treasa]

Sweetjasmine and Locust just killed me. Although I supposedly have a high aptitude for math, I see maybe one sentence or line, and then my attention wanders off. "Ok, so h and some other letters...wait, why are there letters in math?....oh, look, SQUIRREL!!"

 

That is my general thought process for anything harder than algebra.

 

God bless you people.

[Pyro]

Instead of sharing your homework on here with us take it to a math tutor.

 

Spend more time with a tutor and away from home and an internet connection.

 

This place is proving to be a big distraction for you, and if you flunk out of college I am sure that we will be hearing all about it.