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Find the general solution of sin x-3 sin...

Find the general solution of sin x-3 sin 2x+ sin 3x= cos x - 3 cos 2x + cos 3x.

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`(npi)/2+pi/8,n in I`
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PATHFINDER-BASIC MATHEMATICS-QUESTION BANK
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  14. If (log2(4x^2-x-1))/(log2(x^2+1))gt1, then x lies in the interval

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