Sequence And Series Question 164
Question: Sum to infinity of the series is $ 1+\frac{x^{2}}{2,!}+\frac{x^{4}}{4,!}+…… $ is
[MP PET 1994]
Options:
A) $ \frac{e^{x}-{e^{-x}}}{2} $
B) $ \frac{e^{x}+{e^{-x}}}{2} $
C) $ \frac{{e^{-x}}-e^{x}}{2} $
D) $ \frac{-(e^{x}+{e^{-x}})}{2} $
Show Answer
Answer:
Correct Answer: B
Solution:
It is obvious.
BETA
