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Putnam
1987 Putnam
B1
B1
Part of
1987 Putnam
Problems
(1)
Putnam 1987 B1
Source:
8/5/2019
Evaluate
∫
2
4
ln
(
9
−
x
)
d
x
ln
(
9
−
x
)
+
ln
(
x
+
3
)
.
\int_2^4 \frac{\sqrt{\ln(9-x)}\,dx}{\sqrt{\ln(9-x)}+\sqrt{\ln(x+3)}}.
∫
2
4
ln
(
9
−
x
)
+
ln
(
x
+
3
)
ln
(
9
−
x
)
d
x
.
Putnam