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In the Taylor series expansion of ex about x = 2 the coefficient of (x – 2)4 is
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- 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! |