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## #1 2013-11-25 03:06:12

Agnishom
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From: The Complex Plane
Registered: 2011-01-29
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Hi Srijaroyc;
Welcome to MIFF! You're possibly going to meet some wonderful people here

Our equation is

We are going to solve this with the quadratic formula

Followed?

Last edited by Agnishom (2013-11-25 03:07:27)

'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
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## #2 2013-11-25 03:07:23

Srijaroyc
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Registered: 2013-11-25
Posts: 4

Got it. I was using that b2-4ac formula not this one.

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## #3 2013-11-25 03:11:02

Agnishom
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From: The Complex Plane
Registered: 2011-01-29
Posts: 17,971
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I updated post 1

is required. That is the discriminant

Now, let us examine what are a, b and c.

a is the coefficient of x², b is the coefficent of x and c is the constant term.

In your next reply, I'll be expecting you to tell what are the values of a, b and c

Last edited by Agnishom (2013-11-25 03:11:32)

'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
'You have made another human being happy. There is no greater accomplishment.' -bobbym

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## #4 2013-11-25 03:13:14

Srijaroyc
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Registered: 2013-11-25
Posts: 4

a=1 , b=0 , c=1

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## #5 2013-11-25 03:16:06

Agnishom
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From: The Complex Plane
Registered: 2011-01-29
Posts: 17,971
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Thanks.

Now, we will need

which is

But, again, is it possible to find the square root of a negative number?

I'd like to know what you think

'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
'You have made another human being happy. There is no greater accomplishment.' -bobbym

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## #6 2013-11-25 03:17:14

Srijaroyc
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Registered: 2013-11-25
Posts: 4

no?

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## #7 2013-11-25 03:18:55

Agnishom
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From: The Complex Plane
Registered: 2011-01-29
Posts: 17,971
Website

Right

That is not possible. So, neither is it possible to solve for x.

Wait, I'll come back after dinner.

Did you read what NCERT says on Discriminants?

Last edited by Agnishom (2013-11-25 03:36:20)

'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
'You have made another human being happy. There is no greater accomplishment.' -bobbym

Online

## #8 2013-11-26 00:01:18

Srijaroyc
Member
Registered: 2013-11-25
Posts: 4

got it. totally. in the car.

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## #9 2013-11-26 00:16:21

Agnishom
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From: The Complex Plane
Registered: 2011-01-29
Posts: 17,971
Website

NCERT wrote:

1. IF D is negative, THEN the equation has no real roots.
2. IF D is positive, THEN the equation has two real roots.
2. IF D is zero, THEN both the roots of the equation are equal.

Let us discuss a few examples.

P.S: What is your feedback about the last line of my signature?

Last edited by Agnishom (2013-11-26 00:30:16)

'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
'You have made another human being happy. There is no greater accomplishment.' -bobbym

Online