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What does 8i mean?

 Jul 10, 2014

Best Answer 

 #3
avatar+267 
+8

I believe it means the imaginary number. It could however just be any number as x or n or y.

Imaginary number is what you get when you take the square root of negative numbers since no actual number when squared gives a negative result, people made up a number and the name imaginary numbers sticked to it. I is the imaginary unit number but could also stand for what I believe is the unit matrix which has 1's across the diagonal and 0's everywhere else.

I assume it's imaginary number that the context is meaning. 8i could be the square root of -64

i^2 = -1

This makes some mathematics easier, even though we don't actually know what i itself is, it is unreal.

For example: What is the square root of -16?

The answer would be 4i since sqrt(-16)=sqrt(-1) * sqrt(16)

Which therefore gives us i(since i^2 is -1) and 4(because sqrt(16) is 4)

Then we end up with i * 4 which can just be written as 4i.

 

Hope I helped!

 Jul 10, 2014
 #1
avatar+146 
+3

that all depends on the context of the question from which it originated

 Jul 10, 2014
 #2
avatar+8260 
+3

Good answer. I go with snips3s.

 Jul 10, 2014
 #3
avatar+267 
+8
Best Answer

I believe it means the imaginary number. It could however just be any number as x or n or y.

Imaginary number is what you get when you take the square root of negative numbers since no actual number when squared gives a negative result, people made up a number and the name imaginary numbers sticked to it. I is the imaginary unit number but could also stand for what I believe is the unit matrix which has 1's across the diagonal and 0's everywhere else.

I assume it's imaginary number that the context is meaning. 8i could be the square root of -64

i^2 = -1

This makes some mathematics easier, even though we don't actually know what i itself is, it is unreal.

For example: What is the square root of -16?

The answer would be 4i since sqrt(-16)=sqrt(-1) * sqrt(16)

Which therefore gives us i(since i^2 is -1) and 4(because sqrt(16) is 4)

Then we end up with i * 4 which can just be written as 4i.

 

Hope I helped!

Quazars Jul 10, 2014
 #4
avatar+11912 
+3

i think u will have to decide again DragonSlayer before going with snip3s!

 Jul 10, 2014
 #5
avatar+8260 
+3

You don't know, ROSEALA!

 Jul 10, 2014
 #6
avatar+11912 
+3

First of all im Rosala!and i dont know whom ur talking to!

 Jul 10, 2014
 #7
avatar+8260 
+3

You like roses, right?

 Jul 10, 2014
 #8
avatar+11912 
+3

yes i do!

 Jul 10, 2014
 #9
avatar+267 
+3

I see what you did there. It was a great pun for REAL.

 Jul 10, 2014
 #10
avatar+8260 
+3

Then what's the problem with ROSEALA? You don't call me Slayer, but Dragon, right?

Same problem, ROSEALA!

 Jul 10, 2014
 #11
avatar+11912 
+3

i dont like ROSEALA!its not part of my name but Dragon and Slayer is of urs!

 Jul 10, 2014
 #12
avatar+8260 
+3

Why do you hate that?

 Jul 10, 2014
 #13
avatar+11912 
+3

its a kind of ...................................!

i dont know but i just dont like it

 Jul 10, 2014
 #14
avatar+8260 
+3

It has rose in it!

 Jul 10, 2014
 #15
avatar+267 
+3

I just rose from my chair because of how off topic this conversation is going :)

 Jul 10, 2014
 #16
avatar+11912 
+3

if ur talking about Rosala!then yes!maybe it has rose in it and its a beautiful name!

 Jul 10, 2014
 #17
avatar+8260 
+3

Good one Quazars!

 Jul 10, 2014
 #18
avatar+11912 
+3

btw Quazars whom were u talking about!

 Jul 10, 2014
 #19
avatar+8260 
+6

Hahaha!

 Jul 10, 2014
 #20
avatar+8260 
+3

Answer my Math Test. Really fun!

 Jul 10, 2014
 #21
avatar+11912 
+3

NOOO!NOT AGAIN!

 Jul 10, 2014
 #22
avatar+8260 
+3

Why do you hate tests?

 Jul 10, 2014
 #23
avatar+11912 
+3

What points !i dont know anything!

yes i dont like tests especially math test!but u can take English if u want!i like that!

 Jul 10, 2014

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