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#1 2024-03-10 01:22:16
- mathxyz
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- From: Brooklyn, NY
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Find the Value of B
If f(x) = 3x^2 - Bx + 4 and f(-1) = 12, what is the value of B?
Let me see.
Let f(x) = 12
12 = 3(-1)^2 - (-1)B + 4
12 = 3 + B + 4
12 = B + 7
12 - 7 = B
5 = B
Do you agree?
The greatest truth about the Rapture is not its timing but it's reality.
Dr. David Jeremiah
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#2 2024-03-10 01:29:24
- Bob
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Re: Find the Value of B
Yes.
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 
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#3 2024-03-10 01:31:01
- KerimF
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- From: Aleppo-Syria
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Re: Find the Value of B
Let me see it in reverse.
f(x) = 3x^2 - Bx + 4 with x=-1 and B=5
f(-1) = 3*((-1)^2) - (5)*(-1) + 4
f(-1) = 3 + 5 + 4 = 12
Your B=5 is right for sure.
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#4 2024-03-10 11:42:42
- mathxyz
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- From: Brooklyn, NY
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Re: Find the Value of B
Yes.
Perfect. I found this question to be a bit interesting.
The greatest truth about the Rapture is not its timing but it's reality.
Dr. David Jeremiah
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#5 2024-03-10 11:44:54
- mathxyz
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- From: Brooklyn, NY
- Registered: 2024-02-24
- Posts: 782
Re: Find the Value of B
Let me see it in reverse.
f(x) = 3x^2 - Bx + 4 with x=-1 and B=5
f(-1) = 3*((-1)^2) - (5)*(-1) + 4
f(-1) = 3 + 5 + 4 = 12Your B=5 is right for sure.
This is not your typical classroom question but interesting nonetheless. This is what I like about textbooks. There are tons of questions normally not taught in the classroom.
The greatest truth about the Rapture is not its timing but it's reality.
Dr. David Jeremiah
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