Project ForgeEngineering Mathematics
Calculus
GATE 2011
Easy
The product of two complex numbers 1+i and 2-5i is
- 7-3i
- B3-4i
- C-3-4i
- D7+3i
Explanation
(1+i)(2-5i) = 2 - 5i + 2i - 5i² = 2 - 3i + 5 = 7 - 3i (using i²=-1).
Source: GATE ME 2011 (2011)
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