设f(x)可微 求limh→0 [f(x+2h)-f(x)]/h
设函数f(x)在x=a处的导数为f'(a),求limh→0 f^2(a)-f^2(a-h)/h 答案为2f(a)f'(a
设函数f(x)在x=x0处可导,则limh→0f(x0+h)−f(x0)h( )
设f(x)在x=x0的邻近有连续的二阶导数,证明;limh→0f(x0+h)+f(x0-h)-2f(x0)/h²
设f'(x) = 3^(1/2) ,求 lim(h→0) [f(x+mh) - f(x - nh)] / h ,(m ,
设函数f(x)在点x处可导,试求h→0 lim f(x+h)-f(x-h)/2h的值
设f(x)为可导函数,且lim(h→0) f(3)-f(3+h)/2h=5,则f'(3)等于?
设f(x)在x=a处可导,f'(x)=b 求极限lim(h-0) f(a-h)-f(a+2h)/ h
f(x)可导,求当h趋近0负时,lim【f(x)-f(x-h)】/h的值
设函数f(x)在点x0处可导,求lim(h→0)(f(x0+h)-f(x0-h))/2h的值
设f(x)在x=2处可导,且f'(2)=1,则lim h→0 [ f(2+h)-f(2-h)]/h等于多少,
设函数f(x)在点x处可导,试求h→0 lim f(x-h)-f(x)/h的值
设f(X)在x=x0处具有二阶导数f''(x0),试证:lim(h→0)(f(x0+h)-2f(x0)+f(x0-h))