作函数图像：

y=2sinx*abscosx＋√3cos2x

作函数图像：

y=16/x-8

作函数图像：

y=（x+1）√1-x*x

作函数图像：

y=2x³+5x²-6x+2

作函数图像：

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y=xcosxx
y=xsinx