Posted by **Calculus** on Monday, October 11, 2010 at 3:32pm.

f(x) = 6(cos(x))^2 - 12sin(x)

0 ¡Ü x ¡Ü 2(PI)

I have to find where the interval is increasing, decreasing, local mins and maxs, inflection points, and concave up and down. I understand how to do these type of problems. I am just getting messed up with the sin, cos, and pi stuff. So far I have

f'(x)= -12cos(x)sin(x)-12cos(x) and i have the critical numbers being -pi/2 and pi/2. and i am lost from there...

## Answer this Question

## Related Questions

- Calculus (urgent!!) - Please answer the following questions about the function f...
- Calculus (pleas help!!!) - Please answer the following questions about the ...
- Calculus (pleas help!!!) - Please answer the following questions about the ...
- Calculus - Consider the function f(x)=3cosx−cos^(3)x for 0<x<2π...
- Calculus - Suppose that f(x)=3x^3+3x. Find all critical values of f. Then use ...
- Calculus - F(x) = x^5 ln x A) Find the interval on which f is increasing Find ...
- increasing decreasing and more - How to analytically find the intervals on which...
- grade 12 AP calculus - for f(x= -1/4x4-1/3x3+2x, use analytic method to find the...
- Calculus - let f(x)=x^3(e^-x) Answer using calculus, use graphing calculator ...
- Calculus - For y=(1/4)x^4-(2/3)x^3+(1/2)x^2-3, find the exact intervals on which...