Question

obtener la derivada de la función que se indica fx 4cos3x-3 sen 4x

Answer 1

f(x) = 4 cos (3x) - 3 sen (4x)

f'(x) = (4)(3)[- sen(3x)] - (3)(4) cos(4x)
f'(x) = -12 sen(3x) - 12 cos (4x)
f'(x) = -12 [sen(3x) + cos (4x)]