I need help with fractional exponents.

is it still

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- March 2nd 2010, 06:43 PMZanderistNeed derivative help once more.

I need help with fractional exponents.

is it still - March 2nd 2010, 06:48 PMAlgebraicgeometry421
Yes , if y=x^n then y' = n x^(n-1).

So, in your problem , y'=(6/9)(x^((6/9)-1))= (2/3)(x^(-1/3))=2/(3x^(1/3)). - March 2nd 2010, 06:48 PMskeeter
- March 2nd 2010, 06:55 PMZanderist
- March 2nd 2010, 07:17 PMdani
- March 2nd 2010, 08:06 PMZanderist
- March 2nd 2010, 08:10 PMZanderist
Okay let's take it up a level...

Quotient rule I believe.

I just want to make sure about this

It's derivative is...

- March 2nd 2010, 08:55 PMZanderist
I have a problem I just can't stand.

http://www.mathhelpforum.com/math-he...1&d=1267592067

I take it to find B you need the second der. for A you just leave it as is.

I just don't know what is the proper answer. - March 3rd 2010, 05:24 AMskeeter
start a new problem with a new thread, otherwise this one can get very confusing.

thank you.