Same chapter2 marksDifficulty: Easy
Find the modulus and argument of the complex number 3 + 4i.
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2 marksDifficulty: Easy
Simplify (1 + i)2 and find its modulus.
Original Khojo Papers practice question — not from a past board paper.
Answer
(1 + i)2 = 2i, and its modulus is 2.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
Expanding gives 1 + 2i + i2 = 2i, since i2 = −1, and |2i| = 2.
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