设f(x)是连续函数,且lim(x>0)f(x)/x=2,若g(x)=∫(0到1)f(xt)dt,试求g'(x),并讨论g'(x)在x=0处的连续性

设f(x)是连续函数,且lim(x>0)f(x)/x=2,若g(x)=∫(0到1)f(xt)dt,试求g'(x),并讨论g'(x)在x=0处的连续性
设f(x)是连续函数,且lim(x>0)f(x)/x=2,若g(x)=∫（0到1）f(xt)dt,试求g'(x),并讨论g'(x)在x=0处的连续性