i is the unit imaginary part of complex number , but there is a question which it is mixed me probably i missed the definition of a number , wolfram alpha i is assumed to be a number , and others assumed it to be variable because it satisfies √i2 =+i or −i then my question here :
Question:
Is i a number then what is it's value ?
Answer
Asking what's the value of i is like asking what's the value of 2. And, just like i2 has two square roots, i and −i, 22 has two square roots, 2, and −2.
And yes, it is a number, not a variable.
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