Power series expansions can also be very useful for calculating indeterminate forms. Just for fun, try to calculate the indeterminate forms sin(x) lim et and lim x→0 - x 1 x2 using our power series representation of sin(x) and e". sin(x) = > (-1)"x2n+1 (2n + 1)! x' +. 7! 3! 5! n=0 x2 = 1+ x + 2! x4 + 4! ... n! 3! + + ||

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section10.3: Geometric Sequences
Problem 49E
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Power series expansions can also be very useful for calculating indeterminate forms.
Just for fun, try to calculate the indeterminate forms
sin(x)
lim
et – x
1
-
and lim
x2
using our power series representation of sin(x) and e".
Σ
(-1)"x²n+1
(2n + 1)!
x7
+
7!
sin(x)
= X
-
-
3!
5!
n=0
4
x"
= 1+x +
n!
n=0
et
+
4!
%3D
..
2!
3!
Transcribed Image Text:Power series expansions can also be very useful for calculating indeterminate forms. Just for fun, try to calculate the indeterminate forms sin(x) lim et – x 1 - and lim x2 using our power series representation of sin(x) and e". Σ (-1)"x²n+1 (2n + 1)! x7 + 7! sin(x) = X - - 3! 5! n=0 4 x" = 1+x + n! n=0 et + 4! %3D .. 2! 3!
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