1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Grace [21]
3 years ago
12

What does the imaginary number i represent

Mathematics
2 answers:
VikaD [51]3 years ago
8 0
I represent the imaginary part like a+bi where a is the real part 

but in the other words i = sqrt(-1) 

hope helped 
soldier1979 [14.2K]3 years ago
8 0

Imaginary numbers always confused me. Like understanding e, most explanations fell into one of two categories:

∴<span>It’s a mathematical abstraction, and the equations work out. Deal with it.
</span>∵<span>It’s used in advanced physics, trust us. Just wait until college.</span>

Gee, what a great way to encourage math in kids! 

                                               x²= 9

The answers are 3 and -3. But suppose some wiseguy puts in a teensy, tiny minus sign:

                                                      i²= -1

Uh oh. This question makes most people cringe the first time they see it. You want the square root of a number less than zero? That’s absurd! (Historically, there were real questions to answer, but I like to imagine a wiseguy.)

It seems crazy, just like negatives, zero, and irrationals (non-repeating numbers) must have seemed crazy at first. There’s no “real” meaning to this question, right?

Wrong. So-called “imaginary numbers” are as normal as every other number (or just as fake): they’re a tool to describe the world. In the same spirit of assuming -1, .3, and 0 “exist”, let’s assume some number i exists where:

That is, you multiply i by itself to get -1. What happens now?

Well, first we get a headache. But playing the “Let’s pretend i exists” game actually makes math easier and more elegant. New relationships emerge that we can describe with ease.

You may not believe in i, just like those fuddy old mathematicians didn’t believe in -1. New, brain-twisting concepts are hard and they don’t make sense immediately, even for Euler. But as the negatives showed us, strange concepts can still be useful.

I dislike the term “imaginary number” — it was considered an insult, a slur, designed to hurt i‘s feelings. The number i is just as normal as other numbers, but the name “imaginary” stuck so we’ll use it.

You might be interested in
Phoebe wants to get atleast a grade of 90 in the math class. Her grade will be the average of two tests. She scored a 94 on the
marin [14]
First things first, you will have 94 + x. Place those on top of a fraction bar and on the bottom put the two numbers over 2. So you have 94 + x over 2. Then, write the symbol ‘greater than or equal to’ and on the other side place your 90. So, 90 + x over 2 is greater than or equal to 90. This is a difficult thing to write out and explain so I hope this makes sense. :)
7 0
3 years ago
Read 2 more answers
REALLY NEED HELP!!!<br> PLZ
Advocard [28]
Take a pic of whole page so I can see instructions
7 0
3 years ago
If 3 oranges cost $1.75, how much<br> would 20 oranges cost?
olya-2409 [2.1K]

Answer:

$12

Step-by-step explanation:

1.75/3= 0.6 (1dp)

0.6 x 20 = 12

5 0
3 years ago
Read 2 more answers
PLZZ ANSWER
IgorC [24]

Answer:

5/143

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
How is domain of the function f(x)=sinx restricted so that its inverse function exists?
Virty [35]

Answer:

Correct answer:  sin x ⇒D(x) :  [- π/2, π/2] ; sin⁻¹x ⇒ CD(x) :  [- π/2, π/2]

Step-by-step explanation:

In order for the function sin x to have an inverse function sin⁻¹x due to the monotony, the domain is taken D(x) :  [- π/2, π/2] and the range of sin⁻¹x  is CD(x) :  [- π/2, π/2].

God is with you!!!

8 0
3 years ago
Other questions:
  • Can someone solve this problem for me? Show me your steps to solve this problem as well.
    12·1 answer
  • The​ half-life of​ carbon-14 is 5600 years. if a piece of charcoal made from the wood of a tree shows only 62​% of the​ carbon-1
    13·1 answer
  • 3/5 divided by 2/15 equals what ?
    5·1 answer
  • Linda won $200,000 in a state lottery. She first paid income tax on 30% on the winnings. She invested some of the rest at 1.5% a
    13·1 answer
  • Lines c and d are intersected by line p. At the intersection of lines c and p, the bottom left angle is (3 x + 45) degrees. At t
    8·1 answer
  • A pitcher is full of lemonade. Which unit of liquid volume best describes the amount of lemonade in the pitcher?
    15·1 answer
  • X-9&lt;18<br> Solve them graph on a number line
    5·1 answer
  • 3 – 2x ≥ 5 or 3(x – 2) + 1 &gt; 7
    8·2 answers
  • The base of a regular pyramid is a hexagon.
    5·2 answers
  • Find the value of x <br><br> help please !
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!