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g(x)=x^3-1

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2 Answers

Are they asking you to graph it?
 
I'm reading the problem as g(x) = x- 1.
 
Since it's Pre-Calc, I'm guessing they probably want you to graph it.
 
The parent function is f(x) = x.
 
 
So 3 pts on f(x) are:  (-1, -1), (0, 0), and (1, 1).  Since the -1 will result in a downward shift of 1 unit,
the points on the graph of g(x) = x3 - 1 would be (-1, -2), (0, -1), and (1, 0).
 
You can graph it from there.  It's concave down on the left side of the y axis and concave up on the right side of the y axis.
 
Hope this helps.  
 
Jason
Hi Yozeline;
I am not exactly certain what this is...
g(x)=x3-1
or
g(x)=(x3)-1
 
Let's do both...
g(x)=x3-1=x2
This is because this is...
(x)(x)(x)
 
g(x)=(x3)-1
This can also be expressed as...
g(x)=(x3)/(x1)=(x3)/(x)
This is because (x)(x)(x)/(x)
Henceforth...
x2
 
It would be easier to say 3-1=2.
 
Is that the answer you are looking for?