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Science
:
Math Exam Resources/Courses/MATH103/April 2016/Question 08 (a)/Hint 1
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From UBC Wiki
<
Science:Math Exam Resources
|
Courses/MATH103
|
April 2016
|
Question 08 (a)
Use the power series of
cos
x
{\displaystyle \cos x}
at
0
:
{\displaystyle 0:}
cos
x
=
∑
n
=
0
∞
(
−
1
)
n
x
2
n
(
2
n
)
!
.
{\displaystyle \cos x=\sum _{n=0}^{\infty }(-1)^{n}{\frac {x^{2n}}{(2n)!}}.}
