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#1 2024-03-10 01:26:01

nycguitarguy
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Registered: 2024-02-24
Posts: 542

Find Values of A and B

If f(x) = (x - B)/(x - A), f(2) = 0 and f(-1) is undefined, what are the Values of A amd B?

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#2 2024-03-10 01:33:12

Bob
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Registered: 2010-06-20
Posts: 10,196

Re: Find Values of A and B

Put x=-1 in x-A = 0 to get A.

Put x = 2 in x-B = 0 to get B.

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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#3 2024-03-10 11:46:08

nycguitarguy
Member
Registered: 2024-02-24
Posts: 542

Re: Find Values of A and B

Bob wrote:

Put x=-1 in x-A = 0 to get A.

Put x = 2 in x-B = 0 to get B.

Bob

Thanks. I will solve it later on my lunch break at the job. It will give me something to do.

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#4 2024-03-10 17:48:45

nycguitarguy
Member
Registered: 2024-02-24
Posts: 542

Re: Find Values of A and B

Bob wrote:

Put x=-1 in x-A = 0 to get A.

Put x = 2 in x-B = 0 to get B.

Bob

x - A = 0

-1 - A = 0

-A = 1

A = 1/-1

A = -1

x - B = 0

2 - B = 0


-B = -2

B = -2/-1

B = 2

Yes?

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#5 2024-03-10 20:49:56

Bob
Administrator
Registered: 2010-06-20
Posts: 10,196

Re: Find Values of A and B

Correct.
B


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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#6 2024-03-11 01:46:38

nycguitarguy
Member
Registered: 2024-02-24
Posts: 542

Re: Find Values of A and B

Bob wrote:

Correct.
B

The question itself looks tricky but it's actually easy as pie.

Last edited by nycguitarguy (2024-03-11 01:47:10)

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