函数f=3-cos2x 求f(sin2x)+f(cos2x)
2个回答
f(sinx)=3-(1-2sin^2 x)=2+2sin^2 x
f(x)=2+2x^2
f(sin2x)+f(cos2x)
=2+2xin^2 2x+2+2cos^2 2x
=4+2
=6
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