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ChB_2022
HSC - উচ্চতর গণিত ১ম পত্র
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অধ্যায়-১০ঃ যোগজীকরণ
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∫
0
ln
2
e
x
1
+
e
x
d
x
=
\int_{0}^{\ln 2} \frac{e^{x}}{1+e^{x}} d x=
∫
0
l
n
2
1
+
e
x
e
x
d
x
=
কত ?
A.
ln
2
3
\ln \frac{2}{3}
ln
3
2
B.
2
2
2
C.
ln
3
2
\ln \frac{3}{2}
ln
2
3
D.
3
3
3
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