Mathematics, 26.11.2019 03:31 lukevader311
There are 4 positive integers a, b,c, d, such that 4cos(x)cos(2x)cos(4x) = cos(ax)+cos(bx)+cos(cx)+cos(dx) for all values of x. find a+b+c+d.?
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There are 4 positive integers a, b,c, d, such that 4cos(x)cos(2x)cos(4x) = cos(ax)+cos(bx)+cos(cx)+c...
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