【简答题】如果f(x)在[a,b]上连续且非正,则如果f(x)在[a,b]上连续,则在(a,b)内至少存在一个ξ,使f(x)dx=____如果f(x)在[a,b]上连续,则在(a,b)内至少存在一个ξ,使 f(x)dx=_______。
【简答题】如果函数f(x)在区间[a,b]上连续,在(a,b)上可导且导数恒为零,试用微分学方法证明f(x)在(a,b)上一定是一个常数.
【简答题】如果函数f(x)在区间[a,b]上连续,f(x 0 )(a<x 0 <b)是f(x)的极大值,那么在[a,b)]上f(x)≤f(x 0 )成立.这句话对吗?为什么?
【单选题】如果f(x)在[a,b]上连续,在(a,b)内具有二阶导数,若在(a,b)内,f(x)>0,则f(x)在[a,b]上的图形是()的
【简答题】Listen to the dialogue and choose the best answer for each blank . Susan: ____ ( 1 ) _______. Are you Mr. Steven, the team leader of the Australian delegation Steven: Yes, I am. Susan: Great! ____ ( 2...
【单选题】There (is) much in our life (which) we do nor control (and we are) not even responsible (for).
【简答题】如果函数f(x)在[a,b]上连续,在(a,b)内可导,则在(a,b)内至少存在一点ξ,使得f(b)-f(a)=________。
【单选题】There (is) much in our life (which) we do not control (and we are) not even responsible (for).
【简答题】A. arises B. ascends C. bound D. combination E. definite F. ually G. interfere H. invade I. manifesting J. penalties K. preserving L. programmed M. proximately N. victims O. widespread The roboti...