Wednesday, August 8, 2018

trigonometry - Limit of trigonometric function: limxto0fractan2xx

Find limx0tan2xx



I change tan to sin/cos , we have limx0sin2xxcos2x



Using l'Hopital's rule,




I get limx0cos2x(x)(sin2x)(cos2x) = limx01(x)(sin2x)



I can't proceed with l'Hopital's rule anymore here as I get 1/0.

No comments:

Post a Comment

analysis - Injection, making bijection

I have injection f:AB and I want to get bijection. Can I just resting codomain to f(A)? I know that every function i...