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domain and range of y=x3?
aaah. i'm kinda confused.
what is the domain and range of y=x to the 3rd power?
please help <3
5 Answers
- 1 decade ago
The domain means what x values can be put in without getting an "undefined" y (like getting 1/0 or the square root of 0 or something). The range means what y values can be obtained, and this is dependent on the x-values.
To keep it short, for y=x^3, domain=> all real numbers
range=> all real numbers.
You can plug it in on your calculator, and you'll see that if you trace as far as you want along the graph, you'll get a "y" answer all the time.
Hope this helps.
- 1 decade ago
The domain is all possible x values of the function, whereas the range are all possible y values of this function. Since a cubic equation (like x^3) goes from negative to positive, the range and domain both go from infinity to infinity.
This would be different from say, a quadratic where the range is only either positive or negative, or a circle, where the domain and range are only cover the diameter.
I hope that helps.
Source(s): Physics university student. - Anonymous5 years ago
the graph of x^2 is going up case in point by using one million's on the y-axis and the x-axis will go up by using x^2. For examply y=one million, x=one million y=2, x=4 y=3, x=9 3x^2 could be the x values, multiplies by using 3 so it might go up at thrice the cost of x^2
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- Anonymous1 decade ago
D: {-00,00}
R: {-00,00}
*00 is equal to infinity.
When y=x^3 is graphed, there are an infinite possibility of x values and an infinite possibility of y values.
:D