The first ones obviously simple, I'm just not sure about the answer to the last two.

http://img237.imageshack.us/img237/4940/ps37adct6.png

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- Feb 25th 2007, 09:19 AMSportfreundeKeaneKentFour Differentiation Questions
The first ones obviously simple, I'm just not sure about the answer to the last two.

http://img237.imageshack.us/img237/4940/ps37adct6.png - Feb 25th 2007, 09:39 AMCaptainBlack
- Feb 26th 2007, 05:42 AMSoroban
Hello, SportfreundeKeaneKent!

I'll try the third one . . .

. . . . . . . . . .(2x² - 5)^3

c) .g(x) . = . --------------

. . . . . . . . . . (x + 1)^4

. . . . . . . .(x + 1)^4 3(2x² - 5)²·4x - (2x² - 5)³·4(x + 1)³

g'(x) . = . -------------------------------------------------------

. . . . . . . . . . . . . . . . . . . .(x + 1)^8

. . . . . . .4(x + 1)³(2x² - 5)² [3x(x + 1) - (2x² - 5)]

Factor: . --------------------------------------------------

. . . . . . . . . . . . . . . . . (x + 1)^8

. . . . . .4(2x² - 5)²(x² + 3x + 5)

. . . = . -----------------------------

. . . . . . . . . . . (x + 1)^5

- Mar 16th 2007, 01:10 PMSportfreundeKeaneKent
Is the answer to a.) y'= 18x^2-14x+4/x^1/3?

and the answer to b.) f'(x)=4-12x or 4(1-3x)? - Mar 16th 2007, 01:22 PMCaptainBlack
- Mar 19th 2007, 01:32 PMSportfreundeKeaneKent
Could someone verify the second one b.) ? My friend and I are getting different answers even though there does not appear to be anything wrong with the way that either of us are doing the question.

The answer which I got is 2sqrt(1-4x) - 4x-2/sqrt(1-4x) - Mar 19th 2007, 01:41 PMAfterShock
- Mar 19th 2007, 01:49 PMAfterShock
- Mar 19th 2007, 02:02 PMSportfreundeKeaneKent
Can I simplify that by finding the comon denominator to get this?:

-12/sqrt(1-4x) - Mar 19th 2007, 03:07 PMqbkr21Re:
What program are you using to write the problem? Obviously it isn't Latex because the system is still down...:rolleyes:

- Mar 19th 2007, 07:26 PMSportfreundeKeaneKent
The other answer is 4-12x/sqrt1-4x

I think that that one is right, not sure though.

And qbrk, I don't know how to use that program so... - Mar 19th 2007, 10:56 PMAfterShock
- Mar 19th 2007, 10:57 PMAfterShock