\(\rm i + 3 \over 2i + 1\) का संयुग्म ज्ञात कीजिए। 

  1. 1 - i
  2. -i - 1
  3. i - 1
  4. 1 + i

Answer (Detailed Solution Below)

Option 4 : 1 + i
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संकल्पना:

एक सम्मिश्र संख्या का संयुग्म:

किसी सम्मिश्र संख्या z = x + iy के लिए संयुग्म z̅ को z̅ = x - iy द्वारा ज्ञात किया गया है। 

गणना:

z = \(\rm i + 3 \over 2i + 1\)

z = \(\rm { i + 3 \over 2i + 1}\times {-2i+1\over-2i +1}\)

z = \(\rm -2i^2-6i+i+3\over1 - (2i)^2\)

z = \(\rm {5-5i\over1 + 4}\)

z = \(\rm {5(1 - i)\over5}\)

z = 1 - i

z का संयुग्म = z̅  = 1 + i

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