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CPSCR_2022
HSC - উচ্চতর গণিত ১ম পত্র
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অধ্যায়-১০ঃ যোগজীকরণ
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∫
0
ln
3
e
x
1
+
e
x
d
x
=
?
\int_{0}^{\ln 3} \frac{e^{x}}{1+e^{x}} d x=?
∫
0
l
n
3
1
+
e
x
e
x
d
x
=
?
A.
2
ln
2
+
c
2 \ln 2+c
2
ln
2
+
c
B.
3
ln
2
+
c
3 \ln 2+c
3
ln
2
+
c
C.
ln
2
\ln 2
ln
2
D.
2
ln
2
2 \ln 2
2
ln
2
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