How i can provee number is Real

Question

If number real =true, if not= false

Answer 1

How i can probe that .should i have to menttion all types of Real numbers ?

Answer 2

var real = (n) => {
i=math.sqrt(-1)
n==i && n!==i
}
I tryed like this but didnt work

Answer 3

All numbers except imaginary numbers...thats right ?

Answer 4

All square root with negative number

Answer 5

Program a function (arrow) that, with a logical expression, determines whether a number is (true) or not (false) a real number. Then (in independent paragraphs of instruction) determine whether or not they are real: a) 42.12; b) -56.23; c) 56; d) -34 and e) 0.

c)d)e) i get false

Answer 6

So i solve changing the question
If its whole =false...end

Answer 7

Thx all

Answer 8

Real number are always in the form of p/q where q is not equal to zero. Use if and else condition.

Answer 9

Show me your input values

Answer 10

Let i=some number...
if i is positive, then √i is a real number but if i is negative, √i is not real(i.e, i is a complex number)