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avatar+272 

What value of x will give the minimum value for x^2 + 11x - 5?

 

Thanks so much for all your help

WhichWitchIsWhich  Oct 24, 2017
 #1
avatar+92808 
+1

In the form ax^2  + bx + c   the x value that will give the minimum is

 

-b / [ 2a]

 

So  we have    x^2  + 11x - 5

 

a =  1     b =  11

 

So

 

-b / [2a]   =   - 11 / [ 2 * 1]  =   - 11 / 2

 

And this is the x value that minimizes the function

 

 

cool cool cool

CPhill  Oct 24, 2017
 #2
avatar+272 
0

:D 👍

WhichWitchIsWhich  Oct 24, 2017

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