Thursday

December 25, 2014

December 25, 2014

Posted by **Mark** on Thursday, March 14, 2013 at 12:49pm.

I got -3 sin(3x) cos^3x - 3 sin(x) cos (3x) cos^2 (x) using the product rule

Is this right? Thanks.

- Cos-Derivative -
**Damon**, Thursday, March 14, 2013 at 1:16pmyes

- Cos-Derivative -
**Mark**, Thursday, March 14, 2013 at 1:27pmThanks!

**Answer this Question**

**Related Questions**

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

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

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

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

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

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

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

calculus - Differentiate. y= (cos x)^x u= cos x du= -sin x dx ln y = ln(cos x)^x...

Calc. - Differentiate. y= (cos x)^x u= cos x du= -sin x dx ln y = ln(cos x)^x ln...

pre-cal - Simplify the given expression........? (2sin2x)(cos6x) sin 2x and cos ...