Tuesday

October 21, 2014

October 21, 2014

Posted by **redgy** on Wednesday, March 16, 2011 at 6:39pm.

f(x)= cos^5(4x-19)

I keep getting 20cos^4(4x-19)sin, but the answer is supposed to be

-20cos^4(4x-19)sin(4x-19). I can't seem to get there with derivatives

- calculus -
**redgy**, Wednesday, March 16, 2011 at 6:45pmnever mind. I figured it out. That is the correct anser, I didn't carry through with the derivitives.

**Answer this Question**

**Related Questions**

Calculus 12th grade (double check my work please) - 1.)Find dy/dx when y= Ln (...

tigonometry - expres the following as sums and differences of sines or cosines ...

Physics - An object is shot at 20m/s at an angle theta. The object lands 24m ...

Mathematics - Trigonometric Identities - Let y represent theta Prove: 1 + 1/tan^...

TRIG! - Posted by hayden on Monday, February 23, 2009 at 4:05pm. sin^6 x + cos^6...

Math - Calculus - The identity below is significant because it relates 3 ...

trig - Reduce the following to the sine or cosine of one angle: (i) sin145*cos75...

algebra - Can someone please help me do this problem? That would be great! ...

calculus - Find complete length of curve r=a sin^3(theta/3). I have gone thus- (...

Math, derivatives - f(x) = x² + 2Cos²x, find f ' (x) a) 2(x+cos x) b) x - sin x ...