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anonymous

  • 4 years ago

i dont understand what it means to "describe the end behavior" of f(x)=-3x^38+7x-12x+13

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  1. amistre64
    • 4 years ago
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    what do the ends behave like?

  2. amistre64
    • 4 years ago
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    all you need is the first term: -3x^38

  3. amistre64
    • 4 years ago
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    is this an even exponent?

  4. anonymous
    • 4 years ago
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    yes

  5. amistre64
    • 4 years ago
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    then this acts like the simplest even exponent x^2 to begin with

  6. amistre64
    • 4 years ago
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    is the number in front poistive or negative?

  7. anonymous
    • 4 years ago
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    its a negative 3 with an exponent of 38

  8. amistre64
    • 4 years ago
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    good, then this acts like: -x^2 does how would you describe the ends of an -x^2 graph?

  9. amistre64
    • 4 years ago
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    |dw:1328572733674:dw|

  10. anonymous
    • 4 years ago
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    its pointing downwards

  11. amistre64
    • 4 years ago
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    then unless your material needs a better description; id say: it acts like a -x^2 grpah with the ends going down on each side to -inf

  12. amistre64
    • 4 years ago
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    or something to that effect

  13. anonymous
    • 4 years ago
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    ok thank you!

  14. amistre64
    • 4 years ago
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    yw

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spraguer (Moderator)
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