Same chapter2 marksDifficulty: Easy
Simplify (1 + i)2 and find its modulus.
Complex Numbers
2 marksDifficulty: Easy
Find the modulus and argument of the complex number 3 + 4i.
Original Khojo Papers practice question — not from a past board paper.
Answer
The modulus is 5 and the argument is tan−1(4/3), about 53.13°.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
The modulus is √(32 + 42) = 5, and the point lies in the first quadrant so the argument is the principal value of the arctangent.
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