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RB_2017
HSC - উচ্চতর গণিত ২য় পত্র
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অধ্যায়-০৩ঃ জটিল সংখ্যা
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i
m
+
i
m
+
1
+
i
m
+
2
+
i
m
+
3
=
\mathbf{i}^{m}+\mathbf{i}^{m+1}+\mathbf{i}^{m+2}+\mathbf{i}^{m+3}=
i
m
+
i
m
+
1
+
i
m
+
2
+
i
m
+
3
=
কত ?
(
m
∈
Z
)
?
(m \in \mathbb{Z}) ?
(
m
∈
Z
)?
A.
−
1
-1
−
1
B.
−
i
-i
−
i
C.
0
0
0
D.
i
i
i
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