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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

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  • 1 decade ago
    Favorite Answer

    D: {R}

    R: {R}

    {R} = All real number's

    Source(s): Math Class
  • 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.
  • Anonymous
    5 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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  • Anonymous
    1 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

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