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Problem
Problem
Solve
lim
x
→
0
sin
4
x
1
−
cos
(
1
−
cos
x
)
\lim_{x \to 0} \frac{\sin^4 x}{1 - \cos(1 - \cos x)}
lim
x
→
0
1
−
c
o
s
(
1
−
c
o
s
x
)
s
i
n
4
x
.
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