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Mathematics
Mathematics
Problem
Find the integral of
1
x
2
+
a
2
\frac{1}{\sqrt{x^2 + a^2}}
x
2
+
a
2
1
w.r.t x and hence evaluate
∫
1
x
2
+
121
d
x
\int \frac{1}{\sqrt{x^2 + 121}} dx
∫
x
2
+
121
1
d
x
.
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