Homework Help: maths

Posted by albert on Wednesday, May 11, 2011 at 6:28pm.

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

maths - Mgraph, Wednesday, May 11, 2011 at 6:39pm
B in form: -1/8(cos(4x)+2x^2)^2+C

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