f(x)=sinsin2x的原函数怎么求?
∫(sinx)^2 dx
=∫(1-cos2x)/2 dx
=x/2-(1/2)sin2xcos2x+C
f'(x)=sin2x的原函数为∫sin2xdx=-(1/2)cos2x+C
f(x)=sin2x的原函数为f(x)=-1/2cos2x.f(x)=sin2x=sin(x+x)=sinxcosx+cosxsinx=2sinxcosx
这个是导数?
你说的是原函数还是反函数?
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祁疤盐酸: f(x)=sin2x=sin(x+x)=sinxcosx+cosxsinx=2sinxcosx
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