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#1 2023-11-15 03:42:54

sologuitar
Member
Registered: 2022-09-19
Posts: 467

Find Value of k

Find k such that the equation kx^2 + x + k = 0.

Let me see.

The discriminant is b^2 - 4ac


Let b = 1

Let a = k

Let c = k


(1)^2 - 4k + k = 0

Solving for k, I get 1/3.

Is this correct?

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#2 2023-11-15 04:05:52

amnkb
Member
Registered: 2023-09-19
Posts: 253

Re: Find Value of k

sologuitar wrote:

Find k such that the equation kx^2 + x + k = 0.

Just answer the questions posted and keep your text math-related.

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#3 2023-11-15 04:14:24

Bob
Administrator
Registered: 2010-06-20
Posts: 10,464

Re: Find Value of k

hi amnkb

Yes, I did that too. But it doesn't tell what k is.  There must be more to this question surely. eg. If x has a single solution what is k?

Bob


Children are not defined by school ...........The Fonz
You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you!  …………….Bob smile

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#4 2023-11-15 04:33:12

amnkb
Member
Registered: 2023-09-19
Posts: 253

Re: Find Value of k

Bob wrote:

hi amnkb

Yes, I did that too. But it doesn't tell what k is.  There must be more to this question

i agree

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#5 2023-11-16 18:26:55

sologuitar
Member
Registered: 2022-09-19
Posts: 467

Re: Find Value of k

amnkb wrote:
sologuitar wrote:

Find k such that the equation kx^2 + x + k = 0.

Just answer the questions posted and keep your text math-related.

This does not lead to the value of k. I think the discriminant is needed here to find k. What else can it be?

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#6 2023-11-16 18:28:55

sologuitar
Member
Registered: 2022-09-19
Posts: 467

Re: Find Value of k

amnkb wrote:
Bob wrote:

hi amnkb

Yes, I did that too. But it doesn't tell what k is.  There must be more to this question

i agree

The question has been presented as found in the textbook. I don't think I'm wrong about using the discriminant to find k.

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#7 2023-11-16 19:07:21

amnkb
Member
Registered: 2023-09-19
Posts: 253

Re: Find Value of k

sologuitar wrote:

Find k such that the equation kx^2 + x + k = 0.

Just answer the questions posted and keep your text math-related.

bob- heres the rest of the question-->

solo- sorry

Last edited by amnkb (2023-11-16 19:12:31)

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#8 2023-11-17 06:55:23

sologuitar
Member
Registered: 2022-09-19
Posts: 467

Re: Find Value of k

amnkb wrote:
sologuitar wrote:

Find k such that the equation kx^2 + x + k = 0.

Just answer the questions posted and keep your text math-related.

bob- heres the rest of the question-->

solo- sorry


You got it right. Thank you.

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