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Mathematics
Problem
Determine
lim
x
→
0
1
−
cos
2
x
x
2
\displaystyle\lim_{x\to 0}\frac{1-\cos 2x}{x^{2}}
x
→
0
lim
x
2
1
−
cos
2
x
. a)
0
0
0
b)
2
2
2
c)
1
2
\dfrac12
2
1
d) 1
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