Question

$\huge{\mathfrak{Ello!♡}}$•°⭑
→ Find the derivative of tan x using first principle.
#Revision Time ._. ​

Answer 1

Formula used :

$\star \bold{ \lim_{ \Delta x \to \: 0}( \frac{f(x + \Delta \: x) - f(x)}{ \Delta \: x} )}$

$\star \bold{ sin \: (a - b) = sin \: a \: cos \: b - cos \: b \: sin \: a}$

$\star \bold{\lim_{x \to \: 0}( \frac{sin \: x}{x}) = 1}$

Solution refer to the attachment.

Answer 2

oh my God ....itne follower inni jaldi kaha se batore ..........