SOLUTION: If f(x)=2x+5/x-a and f(0)=-1,what is the value of a.
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Question 215884: If f(x)=2x+5/x-a and f(0)=-1,what is the value of a.
Answer by Theo(13342) (Show Source): You can put this solution on YOUR website!
If f(x)=2x+5/x-a and f(0)=-1,what is the value of a.
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a = 5
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here's how.
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(2*(0) + 5) / (0-a) = -1
This reduces to:
5 / (-a) = (-1)
Multiply both sides by (-a) to getg:
5 = (-1) * (-a)
This simplifies to:
5 = a
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Substitute in original equation of:
(2*(0) + 5) / (0-a) = -1 to get:
(2*(0) + 5) / (0-5) = -1 which becomes:
(5) / (-5) = (-1) which becomes:
(-1) = (-1) confirming that a = 5 is a good value.
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