Question

encontre a derivada da funçao trigonometrica f(x) = 4cos3x - 3sen4x

Answer 1

F(x)' = [4cos(3x)]'*(3x)' -[3Sen(4x)]'*(4x)'

F(x)' = 4*-Sen(3x)*3 - 3*Cos(4x)*4

F(x)' = -12Sen(3x) -12Cos(4x)

F(x)' = -12[ Sen(3x) + Cos(4x) ]