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16 January, 15:32
Show that f (2-3i) is a real number
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Grady Fowler
16 January, 17:33
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It's not a real number. Remember that i represents √-1. The only way to make it a real number is to multiply i by itself (so i * i or i^2), which will make it - 1
Distribute the f: 2f - (f*3i)
Since the i is still only to the power of 1, it is not a real number. It's imaginary
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