If {z₁} and {z₂} be two complex number, then Re({z₁}{z₂}) =

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4-1.Complex numbers

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If ${z_1}$ and ${z_2}$ be two complex number, then $Re({z_1}{z_2}) = $

$Re ({z_1}).{\mathop{\rm Re}\nolimits} ({z_2})$

$Re ({z_1})$. $Im ({z_2})$

$Im ({z_1}).{\mathop{\rm Re}\nolimits} \,({z_2})$

None of these

Solution

(d)If ${z_1}$ and ${z_2}$ be two complex number then
$Re ({z_1}{z_2}) = {\mathop{\rm Re}\nolimits} ({z_1}){\mathop{\rm Re}\nolimits} ({z_2}) – {\mathop{\rm Im}\nolimits} ({z_1}){\mathop{\rm Im}\nolimits} ({z_2})$

Standard 11

Mathematics

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If ${z_1}$ and ${z_2}$ be two complex number, then $Re({z_1}{z_2}) = $

Solution

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