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Question

Question: The conjugate of complex number \(\frac{2 - 3i}{4 - i}\) is...

The conjugate of complex number 23i4i\frac{2 - 3i}{4 - i} is

A

3i4\frac{3i}{4}

B

11+10i17\frac{11 + 10i}{17}

C

1110i17\frac{11 - 10i}{17}

D

2+3i4i\frac{2 + 3i}{4i}

Answer

11+10i17\frac{11 + 10i}{17}

Explanation

Solution

Sol. 23i4i=(23i)(4+i)(4i)(4+i)=8+312i+2i16+1=1110i17\frac{2 - 3i}{4 - i} = \frac{(2 - 3i)(4 + i)}{(4 - i)(4 + i)} = \frac{8 + 3 - 12i + 2i}{16 + 1} = \frac{11 - 10i}{17}

⇒ Conjugate =11+10i17.= \frac{11 + 10i}{17}.