设f(x)=(sin2xcos3x+cos2xsin3x)lnx,则f'(π/2)=
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设f(x)=(sin2xcos3x+cos2xsin3x)lnx,则f''(π/2)=设f(x)=(sin2xcos3x+cos2xsin3x)lnx,则f''(π/2)=设f(x)=(sin2xcos3
设f(x)=(sin2xcos3x+cos2xsin3x)lnx,则f'(π/2)=
设f(x)=(sin2xcos3x+cos2xsin3x)lnx,则f'(π/2)=
设f(x)=(sin2xcos3x+cos2xsin3x)lnx,则f'(π/2)=
f(x)=(sin2xcos3x+cos2xsin3x)lnx=sin(5x)lnx
f'(x)=5cos(5x)lnx+sin(5x)/x;
代入得2/π
设f(x)=(sin2xcos3x+cos2xsin3x)lnx,则f'(π/2)=
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