设f(2)=,f’(2)=0,∫02f(x)dx=1,求∫01x2f’’(2x)dx.

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问题 设f(2)=,f(2)=0,∫02f(x)dx=1,求∫01x2f’’(2x)dx.

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答案01x2f’’(2x)dx=[*]∫01(2x)2f’’(2x)d(2x)=[*]∫02x2f’’(x)dx =[*]∫02x2d[f(x)]=[*][x2f(x)|02-2∫02xf(x)dx]=-[*]∫02xdf(x) =-[*][xf(x)|02-∫02f(x)dx]=-[*][2f(2)-1]=0.

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