Wednesday

July 23, 2014

July 23, 2014

Posted by **Anonymous** on Friday, July 6, 2012 at 9:26pm.

f(x)=2cosx+sin 2x

- calculus -
**Anonymous**, Friday, July 6, 2012 at 9:49pmAck, I forgot, I don't seem to have a problem with numbers but when it comes to the sin and cos...I am not sure how to derive them. I want to say that 2cosx would end up being something like 2-sinx (x)...but then I feel like there's something wrong w/that scenario.

- calculus -
**Reiny**, Friday, July 6, 2012 at 10:47pmfirst derivative:

-2sinx + 2cos 2x

2nd derivative:

-2cosx - 4sin 2x

take it from there

**Related Questions**

calc - i did this problem and it isn't working out, so i think i'm either making...

Trig - Solve for x in the interval [0,2pi) sin^2x+2cosx=2

Maths Calculus Derivative Integral - Urgent Please - Use 2nd Fundamental Theorem...

Calculus - Find the interval(s) where the function is increasing where and it is...

calculus - Could someone check my reasoning? thanx Find the derivative of the ...

Calculus II - With Taylor/Maclaurin polynomials Use the Remainder Estimation ...

Math - Use 2nd Fundamental Theorem of Calculus to find derivative of f(x) = ...

Quantum mechanics, eigenfunctions! - Determine if the function sin(x)*e^(ax) ...

RESPONSE to PreCalc Question - h t t p : / / w w w . j i s k h a . c o m / d i s...

Calculus - Consider the function f(x)=sin(1/x) Find a sequence of x-values that ...