The imaginary unit number is the square root of -1 and is denoted by i
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The "i" in 3i means the number is imaginary.
Yes. The number 1 + i is imaginary but not pure imaginary, while 5i is pure imaginary.
rational number means 3/5 and ....irrational number means imaginary part will be added eg:3i/5
It is a pure imaginary number.Since (a+bi)-(a-bi) = 2bi, it is a pure imaginary number (it has no real component).
No, but √-23 is. An imaginary number is the square root of a negative number.