Calculus

2009-09-30 12:52:56

#26

GC_PaNzerFIN: Work and study @ Technical Uni; +528|6833|Finland

Oh man, join the club. I hate engineering maths

R^n vector space, linear algebra, Boole and matrix maths

Last edited by GC_PaNzerFIN (2009-09-30 12:53:34)

3930K | H100i | RIVF | 16GB DDR3 | GTX 480 | AX750 | 800D | 512GB SSD | 3TB HDD | Xonar DX | W8

2009-09-30 12:55:18

#27

WldctARCHe: Member; +9|5777|Kansas

To solve #8 just use the chain rule to solve: y = x * (1-x^2)^(-1/2)
Note: 1/sqrt(1-x^2) is the same as (1-x^2)^(-1/2)

Thus:
y' = 1/sqrt(1-x^2) + (x^2) / [(1-x^2)^(3/2)]

2009-09-30 12:55:24

#28

Flaming_Maniac: prince of insufficient light; +2,490|7126|67.222.138.85

Problem was it looked like you got that 1-x^2 out of nowhere?

2009-09-30 13:03:13

#29

TehAndroo: Banned; +19|5767

Hurting my head just looking at that shit, lol.

2009-09-30 13:03:21

#30

Brasso: member; +1,549|7049

WldctARCHe wrote:
To solve #8 just use the chain rule to solve: y = x * (1-x^2)^(-1/2)
Note: 1/sqrt(1-x^2) is the same as (1-x^2)^(-1/2)

Thus:
y' = 1/sqrt(1-x^2) + (x^2) / [(1-x^2)^(3/2)]

i wish it were that easy... i think quotient rule has to be used.

Flaming_Maniac wrote:
Problem was it looked like you got that 1-x^2 out of nowhere?

i multiplied across? probably wrong

"people in ny have a general idea of how to drive. one of the pedals goes forward the other one prevents you from dying"

2009-09-30 13:13:11

#31

WldctARCHe: Member; +9|5777|Kansas

haffeysucks wrote:
i wish it were that easy... i think quotient rule has to be used.

Do your directions specifically state to use the quotient rule or something? Otherwise I'm 99% positive it can be solved using the chain rule with a lot less work.

2009-09-30 13:21:01

#32

Brasso: member; +1,549|7049

WldctARCHe wrote:
haffeysucks wrote:
i wish it were that easy... i think quotient rule has to be used.
Do your directions specifically state to use the quotient rule or something? Otherwise I'm 99% positive it can be solved using the chain rule with a lot less work.

the directions don't say i have to, but shouldn't it be applied? it would be the same as using only chain rule when generalized power rule has to be used.

"people in ny have a general idea of how to drive. one of the pedals goes forward the other one prevents you from dying"

2009-09-30 13:27:30

#33

WldctARCHe: Member; +9|5777|Kansas

I don't think it has to be applied. Try this as it explains using the chain rule step by step better than I ever could:

http://library.wolfram.com/webMathemati … /WalkD.jsp

And take the derivative of: x / ((1-x^2)^(1/2))

EDIT: Sorry, I made a mistake ealier and meant to say that you have to use the product rule with the chain rule. The product rule takes the place of having to do the quotient rule.

Last edited by WldctARCHe (2009-09-30 13:30:31)

2009-09-30 14:35:59

#34

Hurricane2k9: Pendulous Sweaty Balls; +1,538|6121|College Park, MD

DrunkFace wrote:
Hurricane2k9 wrote:
I thought accounting was mostly just addition, subtraction, multiplication and division...
lol

Maybe for the first semester.

I thought everyone in accounting used magic boxes and basically punched in a few numbers and the computer spits out the answers

https://static.bf2s.com/files/user/36793/marylandsig.jpg

BF2S Forums Calculus

WldctARCHe wrote:

Flaming_Maniac wrote:

haffeysucks wrote:

WldctARCHe wrote:

haffeysucks wrote:

DrunkFace wrote:

Hurricane2k9 wrote:

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