square root -1?

Answer 1

i

Answer 2

it should be -1 1/2

Answer 3

i is the imaginary unit that represents the square root of -1. Therefore, the square root of -4 is 2i, -9 is 3i and so on. The square root of -3 would be represented by i radical 3

Answer 4

This will be an imaginary number, i, such that i^2 = -1

Starting with i^2 = -1, then the square root of -1 is the square root of i^2 = i.

Answer 5

Although i(iota) is the symbol,in engineering j operator is more common and avoids mix ups with 1,when written

Why do we need it?
In physics we have many negative quantities.
Easiest,if an arm is rotatating clockwise it is said to be a positive cycle;if rotating anti-clockwise-negative

How do we use it?
Supposing you have -16;change it to -1 x 16 or j16 then go ahead as normal-but the j indicates the negative quantity

This is only skimming the surface but gives you the idea!

Answer 6

Square root (-1) is called and imaginary root. i.e. the roots are not real numbers.

Answer 7

root-1= 1

No two numbers can multiply to make a negative: think - x - = +, + x + = + and - x + = - (but they arent the same).

So we have imaginary numbers, and the root of -1 is called i. We cant give it a value, but we use i (somehow) in quite a few mathematical things, such as in engineering.

Answer 8

It' s the imaginary unit i. i and -i are
the roots of x^2 + 1 = 0.

Answer 9

square root of -1 is not a real number. So it is denoted as i.
i = sqrt(-1)
i is a imaginary number....

Answer 10

You have to know which number system you are dealing with.

If using real numbers there is no square root of -1

If using complex numbers the answer is i. This is by definition.

Answer 11

+1i or-1i.
The "i" means imaginary number. Since there can't be no square root for a negative number, it's an imaginary number.