Contact us
Choose a category below so we can get back to you as quickly as possible.
令m=x0-k 則 im[f(x0-k)-f(x0)]/2k =im[f(m)-f(m+k)]/2k =-im[f(m+k)-f(m)]/2k =-f'(m)/2 因為m=x0-k 所以k趨於0時 f(x0)=f(m) 所以原式=-2/2=-1
We and our partners use cookies and other technologies to analyze traffic and optimize your experience. View more info and control your cookies settings at any time in our Cookies Policy.