问题
填空题
函数f(x)=sin2x+cos2x-
|
答案
∵f（x）=sin2x+cos2x-1 2
=
+cos2x-1-cos2x 2 1 2
=
cos2x．1 2
∴其最小正周期T=
=π．2π 2
故答案为：π．
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函数f(x)=sin2x+cos2x-
|
∵f（x）=sin2x+cos2x-1 2
=
+cos2x-1-cos2x 2 1 2
=
cos2x．1 2
∴其最小正周期T=
=π．2π 2
故答案为：π．