
求这个函数的导数
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y'=[cos(x^2)]'*[sin(1/x)]^2+[cos(x^2)]*[sin(1/x)]^2'
=-sin(x^2)*2x*[sin(1/x)]^2+[cos(x^2)]*2*sin(1/x)*cos(1/x)*(-1/x^2)
=-2x*sin(x^2)*[sin(1/x)]^2-sin(2/x)*(1/x^2)*[cos(x^2)]
=-sin(x^2)*2x*[sin(1/x)]^2+[cos(x^2)]*2*sin(1/x)*cos(1/x)*(-1/x^2)
=-2x*sin(x^2)*[sin(1/x)]^2-sin(2/x)*(1/x^2)*[cos(x^2)]
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