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BB_2021
HSC - উচ্চতর গণিত ১ম পত্র
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অধ্যায়-১০ঃ যোগজীকরণ
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∫
d
x
x
2
+
a
2
=
K
cot
−
1
a
x
+
c
\int \frac{d x}{x^{2}+a^{2}}=K \cot ^{-1} \frac{a}{x}+c
∫
x
2
+
a
2
d
x
=
K
cot
−
1
x
a
+
c
হলে
K
=
?
K=\text { ? }
K
=
?
A.
−
a
-a
−
a
B.
−
1
a
-\frac{1}{a}
−
a
1
C.
1
a
\frac{1}{a}
a
1
D.
a
a
a
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