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DU-A
HSC - উচ্চতর গণিত ১ম পত্র
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অধ্যায়-০৯ঃ অন্তরীকরণ
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lim
x
→
1
2
x
3
−
(
2
k
+
1
)
x
2
+
2
x
+
k
x
−
1
=
−
6
\lim _{x \rightarrow 1} \frac{2 x^{3}-(2 k+1) x^{2}+2 x+k}{x-1}=-6
lim
x
→
1
x
−
1
2
x
3
−
(
2
k
+
1
)
x
2
+
2
x
+
k
=
−
6
হলে k এর মান কত?
(If
lim
x
→
1
2
x
3
−
(
2
k
+
1
)
x
2
+
2
x
+
k
x
−
1
=
−
6
\text { (If } \lim _{x \rightarrow 1} \frac{2 x^{3}-(2 k+1) x^{2}+2 x+k}{x-1}=-6
(If
lim
x
→
1
x
−
1
2
x
3
−
(
2
k
+
1
)
x
2
+
2
x
+
k
=
−
6
Then what is the value of k?)
A.
1
B.
-1
C.
3
D.
−
1
2
-\frac{1}{2}
−
2
1
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