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Prove that Cos(4x) = 8cos^4 x - 8cos^2 x + 1

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Ali
Ali 2023-1-16
关闭： Walter Roberson 2023-1-16
Solve it please

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Matt J
Matt J 2023-1-16
编辑：Matt J 2023-1-16
Ran in:
Use simplify. As a similar example,
syms x
simplify( 1 - 2*sin(x)^2 )
ans = 

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