Find the absolute maximum and absolute minimum values of f on the given interval. (Round all answers to two decimal places.)
f(t) = 2 cos t + sin 2t
[0, ( pi)/2]
so i know the deriv is -2(sint)+cos(2t), but i don't understand how to find a value which makes this zero
Use calculus to find the absolute maximum and minimum values of the function. (Round all answers to three decimal places.)
f(x) = x + 2cos(x)
again, I know the derivative is 1+-2sinx, but i don't understand how to get a value for x which makes the equation equal to zero.