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| 1. |
Find the real value of a for which 3i3 - 2ai2 + (1 – a)i + 5 is real. |
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Answer» we have, 3i3 - 2ai2 + (1 – a)i+ 5 ⟹ -3i+ 2a + (1 – a)i + 5 ⟹ (2a + 5) + i(1 – a – 3) ⟹ (2a + 5) – i(2 + a) |
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