Question

i need help with imaginary numbers...

Answer 1

sure...anything specific? :)

Answer 2

im solving quadratic functions, like when you factor polynomials, with a not equaling one.

Answer 3

so....your good with the basic ... as in what they are and basic arithmetic properties?

Answer 4

So, what exactly is it that you need? Just to know WHAT they are...or how they are used in quadratic functions?

Answer 5

how they are used.

Answer 6

sorry *you're

Answer 7

okay sometimes a quadratics equation cannot be satisfied by real number ... e.g.(x)^2 +3 = 0
as you can see simplifying normally would lead to the root of a negative number i.e. root -3

Answer 8

now this can expressed as sqrt (-1)(3) root -1 is 'i' therefore diving us the answer i *sqrt3

Answer 9

How I would say it is this: Because if you squareroot a negative number, you get an imaginary number. So if the answer ends up being a negative number that you will squareroot, it is imaginary

Answer 10

thanks guys, that really helped a whole lot.

Answer 11

therefore in order to resolve the negative root problem we introduce imaginary numbers.The rest Solving methods ,etc remain the same.Hope I was of some help.

Answer 12

Example would be this: What is the square root of -9 ?
√(9 × -1)
√(9) × √(-1)
3 × √(-1)
=3i

Answer 13

therefore in order to resolve the negative root problem we introduce imaginary numbers.The rest Solving methods ,etc remain the same.Hope I was of some help.