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DU-A_16-17
HSC - উচ্চতর গণিত ২য় পত্র
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অধ্যায়-০৩ঃ জটিল সংখ্যা
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If
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a
−
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,
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\text{ If }\frac{1}{a+i}=\frac{1}{a-i},\ then\ the\ value\ of\ a\ is
If
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+
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1
=
a
−
i
1
,
t
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v
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f
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-
A.
1
1
1
B.
i
2
\frac{i}{2}
2
i
C.
−
1
-1
−
1
D.
−
i
2
-\frac{i}{2}
−
2
i
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