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Mathematics
Mathematics
Problem
Find
lim
x
→
0
1
+
tan
2
x
−
1
x
2
\displaystyle\lim_{x\to 0}\frac{\sqrt{1+\tan^{2}x}-1}{x^{2}}
x
→
0
lim
x
2
1
+
tan
2
x
−
1
. a)
0
0
0
b)
1
1
1
c)
1
2
\dfrac{1}{2}
2
1
d)
1
3
\dfrac{1}{3}
3
1
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