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anonymous

  • one year ago

without graphing, describe the end behavior of the graph of the function f(x)=3x^3

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  1. anonymous
    • one year ago
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    the exponent is odd, hence |dw:1443846217889:dw|

  2. anonymous
    • one year ago
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    actually that is not complete the exponent is odd AND the leading coefficient is positive (it is 3)

  3. anonymous
    • one year ago
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    my options look like this\[A s x--->\infty, f(x)--->-\infty\]

  4. anonymous
    • one year ago
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    @satellite73

  5. Astrophysics
    • one year ago
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    Well the greatest degree determines the end behaviour, in your case the degree is 3 (cube) since you have \[y=3x^3 \] and your degree is odd, so we look at the ends of the graph (that's why it's called end behaviour). So if we plug infinity/ - infinity in our function, then f(x) will go to positive infinity and negative infinity

  6. Astrophysics
    • one year ago
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    That's what it means by x-> infinity, so if you plug in larger numbers in the equation you will get a larger number, in this case f(x) = infinity, and since it's odd, if you plug in x-> - infinity then f(x) = - infinity, hope that makes sense!

  7. Astrophysics
    • one year ago
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    So notice odd degrees have two end behaviours

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