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Question 0802b
Maclaurin Series
Standard Series II
Question
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Find the Maclaurin expansion of
cos
(
3
x
+
x
2
)
{\cos (3 x + x^2)}
cos
(
3
x
+
x
2
)
up to and including the term in
x
4
.
{x^4.}
x
4
.
Express your answer in the form
1
+
a
x
2
+
b
x
3
+
c
x
4
+
…
1+ax^2+bx^3+cx^4 + \ldots
1
+
a
x
2
+
b
x
3
+
c
x
4
+
…
Attempt
a
=
{a=}
a
=
b
=
{b=}
b
=
c
=
{c=}
c
=
Answer
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