Find the limit of Tan Π X / 1-x when the present tends to 1,

Find the limit of Tan Π X / 1-x when the present tends to 1,

It's super simple
limtan∏x/(1-x)=lim(tan(∏x))'/lim(1-x)'
(Tan (Πx)) '/ (1-x)' = (Π / cos ^ 2 (Πx) / (- 1) = - Π / cos ^ 2 (Πx) when x tends to 1,
limtan∏x/(1-x)=lim(tan(∏x))'/lim(1-x)'=-∏