none of these
mine is coming 3
Getting 3 by convert to sum of gp and then infinite expansion
bro whats wrong with three
Bro I also got 3 just wanted to confirm !
Can anyone just post the solution, I'm making a silly mistake somewhere
(1-x)^11 * (1-x)^(-3)
so its simply coefficient in (1-x)^(-3)
Yeah got it, thanks a lot
No need of that too bro @Prashant3
We just have to find coefficient of x
Out of the three brackets we need to take x from one and constant term from the other two so total 3C1× (constant term)^2 so 3
Differentiate and put x=0 which yields 3
@Anilkumar_Polasa i didn't get, how differentiating yields coefficient of x...