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range of a function

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The domain and range of a function 2016-02-19
Genius pose la question :
State the domain and range g(x)=x(x-1)
Penny Nom lui répond.
The range of a function with a finite domain 2016-01-25
Hannah pose la question :
Solve y=(1⁄4)x-1 if the domain is (-4,-2,0,2,4). I don't get how to do this. Can anyone help?
Penny Nom lui répond.
The range of a function defined piecewise 2016-01-13
sarah pose la question :

f(x)={x-2, x<-2
       {x^2-4, -2_<x_<2
       {x+2, x>2

find the range
Penny Nom lui répond.

The range of f(x)=(2x+2)/(x-1) 2015-11-25
Nazrul pose la question :
f : R to R is a function which is defined by f(x)=(2x+2)/(x-1).
Is f(x) an onto function? Please explain.
What is the range of this function?
Thank you very much for your previous help.

Harley Weston lui répond.
The Range of a Function. 1997-09-12
Karel Marek pose la question :
Math Is Book 6 (Ebos/Tuck) question 5(b) gives a surprising answer at the back of the book..

The question is:
Indicate the domain and range for this: y = sqr(x-9) (Square root of)

The answer for the domain is x>=9 which is not surprisingly, but the range is y>=0, yER ... which I could understand if you were not allowed to transform the equation into x as the subject..

But all example on the facing page DO TRANSFORM the equation at will with x and/or y as the subject..

Can you explain this...
??
Chris Fisher lui répond.

 
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