Current location - Training Enrollment Network - Mathematics courses - Advanced mathematics. L'H?pital's law, derivative and equivalent infinitesimal replacement are still zero to zero. What should we do at this time?
Advanced mathematics. L'H?pital's law, derivative and equivalent infinitesimal replacement are still zero to zero. What should we do at this time?
As long as it meets the applicable conditions of L'H?pital's law, it can continue to be used.

Lim (x→ 0) [ex-e (-x)-2x]/(x-sinx) "0/0" type, using L'H?pital = lim (x→ 0) [e x+e (-x)-2]/(65438+).

In addition, Taylor expansion can also be used to solve problems. e^x= 1+x+x? /2+x? /3! +O(x? )、sinx=x-x? /3! +O(x? ) for reference.