设lnf(t)=cost,则∫tf'(t)/f(t)dt=?
设lnf(t)=cost,则∫tf'(t)/f(t)dt=?
设ln f(t)=cost,则∫[tf'(t)]/f(t)dt=
设f(t)=∫e^(-x^2)dx,求∫tf(t)dt=?
设f(x)连续,Y=∫0~X tf(x^2-t^2)dt 则dy/dx=?
∫ 0到x tf(x-t)dt=∫ 0到x (x-t)f(t)dt 为什么?
设f(x)满足 ∫0到x tf(x-t)dt=sinx+kx ,求k和f(x)
设f(x)连续,d/dx∫上标x下标0tf(x^2-t^2)dt=?
微积分题求解设f(x)可微,f(0)=0,f'(0)=1,F(x)=∫tf(x²-t²)dt(注:积
设连续函数f(x)由方程∫(上限x.下限0)tf(t)dt=x^2+f(x)确定,求f(x)
设连续函数f(x)由方程∫(上限x.下限0)tf(t)dt=x^2+f(x)确定,求f(x) 请写出答案.
设f(x)具有连续导数,且满足f(x)=x+∫(上x下0)tf'(x-t)dt求lim(x->-∞)f(x)
设f(x)连续,且满足f(x)=e^x+∫(0,x)tf(x-t)dt,求f(x)