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## Homework Statement

Find an equivalent expression for sin

^{3}x in terms of function values of x, 2x, 3x, raised only to the first power.

## The Attempt at a Solution

stuck! dont know where to begin I am reviewing for my exam right now I remember doing one of these problems before but I cant remember how.

sinx(sinx

^{2})

sinx[(1-cos2x)/2]

am i on the right track?