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Putnam
2005 Putnam
A5
Putnam 2005 A5
Putnam 2005 A5
Source:
December 5, 2005
Putnam
integration
calculus
trigonometry
logarithms
derivative
function
Problem Statement
Evaluate
∫
0
1
ln
(
x
+
1
)
x
2
+
1
d
x
.
\int_0^1\frac{\ln(x+1)}{x^2+1}\,dx.
∫
0
1
x
2
+
1
l
n
(
x
+
1
)
d
x
.
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