00:01
So, let us start with the concept which we are going to use here for this question.
00:07
According to taylor's polynomial of degree 3, t3 of x, this can be defined as the f of a'th term plus f dash of a into the x minus of a plus f double dash of a into x minus of a whole square by 2 factorial plus it will be up to that dash.
00:29
So, according to question, the function we have in given that f of x is equals to ln of 1 plus 2x.
00:37
So, first of all, here the value of a is nothing but what? 1.
00:41
Therefore, f of a will be equals to the f of 1 that will be equals to ln of 1 plus 2 into 1 will be comes out equals to ln of 3.
00:52
In similar way, f dash of x will be goes to derivative of ln of 1 plus 2x will be 1 over 1 plus 2x into derivative of 1 plus 2x will be 2 according to chain rule.
01:03
So, let us find the f dash of a.
01:05
So, this should be equals to f dash of 1 that will be equals to 1 over 1 plus 2 will be comes out equals to 2 by 3.
01:13
In similar way, i can find it out for f double dash of x.
01:17
So, that will be equals to minus 4 by 1 plus twice of x of whole square.
01:21
So, here f double dash of 1 will be goes to minus of 4 divided by 9.
01:30
Then f triple dash of x will be goes to 16 by 1 plus 2x that whole cube...