∫f（x）dx-∫（0到x）f（x）dt=________.
问题描述：
∫f（x）dx-∫（0到x）f（x）dt=________.
答
∫f（x）dx-∫（0到x）f（x）dt
=∫f（x）dx-tf(x)|(t从0到x)
=∫f（x）dx-xf(x)
=-∫xdf(x)答案是C∫（0到x）f（x）dt =tf(x)|(t从0到x) 好像不对C是什么?