4. Evaluate the following sin(x)cos(2x)sin(3x) dx sin(3x)cos(3x) sin(2x)cos(2x) 12 sin(2x) sin(2x) ++C + + 8 8 A. sin(6x) sin(2x) sin(2x) sin(2x)cos(4x) X + + C 24 8 8 sin(3x)cos(3x) sin(2x) + [cos(2x)-1]++ C 12 8 sin(6x) sin(2x) sin(2x)cos(2x) 8 24 8 4 C B. C. D. + 3+1 13-1

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