+0  
 
0
292
1
avatar+272 

Lana defines a function f(x) which is given by the formula f(x) = x^2, but only on a domain she has specified which consists of finitely many values x; she leaves the function undefined for all other x. Given that the range of f(x) is {0,1,2,3,4,5,6,7,8,9\}, what is the maximum number of points that could be in its domain?

WhichWitchIsWhich  Oct 29, 2017
 #1
avatar+90053 
+1

There will be two points each for the range values 1 - 9   and one value for 0

 

So......the max number is  19

 

 

cool cool cool

CPhill  Oct 29, 2017

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