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Mathematics
Mathematics
Problem
20. Find
lim
x
→
0
sin
2
7
x
sin
2
11
x
\lim _{x \rightarrow 0} \frac{\sin ^{2} 7 x}{\sin ^{2} 11 x}
lim
x
→
0
s
i
n
2
11
x
s
i
n
2
7
x
.
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