maths
posted by albert on .
Choose the option that gives an expression for the indefinite integral
ʃ (cos(4x) + 2x^2)(sin(4x) − x) dx.
In each option, c is an arbitrary constant.
Options
A cos(4x) + 2x^2 +c
B 1/8cos(4x) + 2x^2)^2 +c
C 1/4 (sin(4x) − x)^2 + c
D (1/(2 (sin(4x) − x)) +c
E ln cos(4x) + 2x^2 +c
F ln (sin(4x) − x) + c
G ln (cos(4x) + 2x^2)/(sin(4x) – x)+ c
H ln (2x^2 sin(4x) − x cos(4x))+ c

B in form: 1/8(cos(4x)+2x^2)^2+C