If , where is a real number , find the value of .
Give your answer to 3 decimal places.
If you think that the limit does not exist, enter 0.666 as your answer.
Clarification : denotes Euler's number , .
This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try
refreshing the page, (b) enabling javascript if it is disabled on your browser and,
finally, (c)
loading the
non-javascript version of this page
. We're sorry about the hassle.
Relevant wiki: Maclaurin Series
we know the expansion of ln ( x + 1 ) , it is
ln ( x + 1 ) = x − 2 x 2 + 3 x 3 + ⋯ x 1 ln ( x + 1 ) = 1 − 2 x + 3 x 2 + ⋯ e x 1 ln ( x + 1 ) = e 1 − 2 x + 3 x 2 + ⋯ ( x + 1 ) x 1 = e ⋅ e − 2 x + 3 x 2 + ⋯ ( x + 1 ) x 1 = e ⋅ ( 1 − 2 1 x + 2 4 1 1 x 2 + ⋯ ) ( x + 1 ) x 1 = e − 2 e x + 2 4 1 1 e x 2 + ⋯ Plugging this value in our Limit L = x → 0 lim x 2 e − 2 e x + 2 4 1 1 e x 2 + ⋯ − e + 2 e x ⟹ 2 4 1 1 e L = 0 . 4 5 8 3