Question

Calculate l-10+24il.

Answer 1

I am getting this:

http://www.wolframalpha.com/input/?i=Calculate+-10%2b24i&incTime=true

It is saying that the result is -10+24i is that right?

Do the lines on the outside of the -10+24i effect anything?

Answer 2

The "lines outside" signify the MAGNITUDE of the complex number. You must calculate it. Try a Pythagorean Theorem on for size.

Answer 3

@tkhunny don't you use Pythagorean Theorem for triangles?

Answer 4

the magnitude of a complex number relates to trigonometry .... what is the geometry of triangles.

Answer 5

The point \(z=(-10,24i)\) ,
on an Argand Diagram (real and imaginary axes),

\(|z|\) is the distance of the point from the origin