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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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Quadratic Tutorials

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'
'Humanity is still kept intact. It remains within.' -Alokananda

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#2 2013-11-25 03:07:23

Srijaroyc
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Registered: 2013-11-25
Posts: 4

Re: Quadratic Tutorials

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: 15,310
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Re: Quadratic Tutorials

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'
'Humanity is still kept intact. It remains within.' -Alokananda

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

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

Re: Quadratic Tutorials

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: 15,310
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Re: Quadratic Tutorials

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'
'Humanity is still kept intact. It remains within.' -Alokananda

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

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

Re: Quadratic Tutorials

no?

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

Agnishom
Real Member
From: The Complex Plane
Registered: 2011-01-29
Posts: 15,310
Website

Re: Quadratic Tutorials

Right smile

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

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'
'Humanity is still kept intact. It remains within.' -Alokananda

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

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

Re: Quadratic Tutorials

got it. totally. in the car.

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

Agnishom
Real Member
From: The Complex Plane
Registered: 2011-01-29
Posts: 15,310
Website

Re: Quadratic Tutorials

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.
Ready?

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'
'Humanity is still kept intact. It remains within.' -Alokananda

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