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Mathematics
Mathematics
Problem
Use Maclaurin series to evaluate
lim
x
→
0
cos
(
3
x
)
−
1
2
x
2
.
\lim_{x \to 0} \frac{\cos(3x) - 1}{2x^2}.
x
→
0
lim
2
x
2
cos
(
3
x
)
−
1
.
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