-
In the Taylor series expansion of ex about x = 2 the coefficient of (x – 2)4 is
-
- 1 / 4!
- 24 / 4!
- e2 / 4!
- e4 / 4!
- 1 / 4!
Correct Option: C
Taylor series expansion of f(x) about a is given by
| f(x) = f(a) + | f '(a) + | f ''(a) + ....... | ||
| 1! | 2! |
| coefficient of (x - a)4 is | ||
| 4! |
Now f(x) = ex
⇒ f ''''(x) = ex
⇒ f ''''(a) = ea
Hence for a = 2,
| = | |||
| 4! | 4! |