f(x)=2Asinxcosx+2Bsin²x
=Asin2x+B(1-cos2x)
=Asin2x-Bcos2x+B
f(0)=8,f(π/6)=12
题目是错的,因为f(0)=0啊
已知F(X)=2ASINXCOSX+2BSIN²X且F(O)=8,F(π/6)=12,
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