00:02
Hello everyone, in this question we are given with a function f of x is equal to 4 plus x divided by 1 minus 4x.
00:10
Here we have to find the derivative of f of x.
00:19
So, the derivative is given by f dash of x.
00:23
So, this can be done by the quotient rule so that we get 1 minus 4x the whole squared.
00:32
So, by quotient rule for u by v that is given by v squared v du minus u dv.
00:41
So, here we have the numerator as u and denominator as v.
00:46
So, here v is will be 4 plus x and our du will be sorry v will be 1 minus 4x into du.
01:00
So, du is 1 minus u which is 4 plus x into dv that is minus 4.
01:11
So, solving this we will get 1 minus 4x plus 16 plus 4x divided by 1 minus 4x the whole squared.
01:26
So, cancelling the common terms we will get 17 divided by 1 minus 4x the whole squared.
01:36
So, therefore, the derivative of f of x is equal to 17 divided by 1 minus 4x the whole squared which is the respective answer...