已知函数f(x)=(sin x)^2 +a cosx +0.625a -1.5 ,0
问题描述:
已知函数f(x)=(sin x)^2 +a cosx +0.625a -1.5 ,0
答
f(x)=1-(cos x)^2 +a cosx +0.625a -1.5
=-(cos x)^2 +a cosx +0.625a -0.5 ,0