+0

# what is the square root of -1

0
229
3

what is the square root of -1

Guest Apr 16, 2015

#3
+90988
+5

no I do not think so.

by the convention,     $$\sqrt{a\; number}\ge 0$$

for instance

$$\sqrt{25}=+5$$

even though

$$5^2=25\quad and\quad (-5)^2=25$$

Melody  Apr 16, 2015
Sort:

#1
+90988
+5

$$\sqrt{-1}=i$$

i is NOT a real number it is an imaginary number.  It is the basic unit of the imaginary number system :)

Melody  Apr 16, 2015
#2
0

actually,

the square root of -1 is ±1i

Guest Apr 16, 2015
#3
+90988
+5

no I do not think so.

by the convention,     $$\sqrt{a\; number}\ge 0$$

for instance

$$\sqrt{25}=+5$$

even though

$$5^2=25\quad and\quad (-5)^2=25$$

Melody  Apr 16, 2015

### 8 Online Users

We use cookies to personalise content and ads, to provide social media features and to analyse our traffic. We also share information about your use of our site with our social media, advertising and analytics partners.  See details