How is 2cos(4x) the derivative

find the maximum value off(x)= 3cos(x)-2sin(x) I know you have to take the derivative but after the derivative I don't know how
1. 1 answer
2. asked by Anonymous
3. 536 views
find the maximum value off(x)= 3cos(x)-2sin(x) I know you have to take the derivative but after the derivative I don't know how
1. 1 answer
2. asked by Anonymous
3. 622 views
Determine all local extrema, concavity and inflection point/s for y = -2cos(x) in (0, 2Pi). Test by both First Derivative Test
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2. asked by Sel
3. 471 views
How is 2cos(4x) the derivative of f(x)=sin(2x)cos(2x)?
1. 3 answers
2. asked by Charles
3. 875 views
Find the derivative off(x) = sin^2 (e^sin^2 x) I wonder if I'm right F'(x) = 2cos(e^sin^2 x) (sin^2 x e^sin^2 x -1)
1. 2 answers
2. asked by Priscilla
3. 493 views
Find the derivative of sin(2x + 3y)= 3xy + 5y-2.I have this so far 1) cos(2x+3y) * d/dx (2x+3y)= 3xy' + 3y + 5y' 2) cos (2x+3y)
1. 2 answers
2. asked by Mary
3. 642 views
Find the derivative of y=3x^2Cos 2x
1. 1 answer
2. 37 views
Find the derivative ofa)y=3x^2Cos 2x b)y=cot5x c)y=2x^3+4x^2-3x+5
1. 1 answer
2. 37 views
cosA= 5/9 find cos1/2Aare you familiar with the half-angle formulas? the one I would use here is cos A = 2cos^2 (1/2)A - 1 5/9 +
1. 0 answers
2. asked by Anonymous
3. 812 views
find the absolute maximum and minimum of the function y=2cos(t)+sin(2t) on the interval of [0, pi/2]I have taken the derivative
1. 1 answer
2. asked by Kenneth
3. 1,480 views