f(x)在[a,b]上保号是啥意思
f(x)在[a,b]上保号是啥意思
F(x)在(a,b)上可导,F'(x) (a,b)上有界,则f(a,b)上有界
设f(x)在[a,b]上连续,在(a,b)内可导,f(a)f(b)>0,f(a)f[(a+b)/2]0,f(a)f[(a
设f(x)在[a,b]二阶可导,且f''(x)
f(x,y)在[a,b]×[c,
f(x)在(a,b)的导数
在区间[a,b]上,若f(x)>0,f'(x)>0,f''(x)>0,则(b-a)f(a)
设f(x)在[a,b]上二阶可导,且f''(x)>0,证明:函数F(x)=(f(x)-f(a))/(x-a)在(a,b]
f在〔a,b〕上可积,f'(x)
设f在[a,b]上可导,|f'(x)|
f(x)在[a,b]上可导,f(x)的导数是否在[a,b]上连续
设函数f(x)在[a,b]上连续,在(a,b)内可导且f'(x)