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