Question

@ganeshie8 i need your help

Answer 1

Derivative of (secx + tanx)(secx-tanx)
Should i use product rule here

Answer 2

Will it be better to use (a+b)(a-b) = a^2 - b^2 identity and then differentiating it?

Answer 3

yes oh yes
sec^2x - tan^2x

Answer 4

But, we know \(\sec ^2 x - \tan ^2 x = 1\)

Answer 5

so 0

Answer 6

thank you

Answer 7

I think so. But, I am not so good in differentiation, I have just learnt the basics so far. May be, we need @ganeshie8 to confirm the answer.

Answer 8

It is 0

Answer 9

0 is right !

Answer 10

Great work Mathslover! Haha! :)