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Ambition

  • one year ago

Find a cubic function with the given zeros. 6, -5, 2

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  1. kirbykirby
    • one year ago
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    A zero of a function will have the form (x-a), where a is a zero. So, to get a cubic function with those zeroes, think of how you could manipulate (x-a) to get a cubic (exponent 3) function. For example, 6 is a zero of your function, so start out writing (x-6).

  2. Ambition
    • one year ago
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    @kirbykirby I'm lost

  3. precal
    • one year ago
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    |dw:1358545266595:dw|

  4. Ambition
    • one year ago
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    @precal so I MULTIPLY all that?

  5. kirbykirby
    • one year ago
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    Yes. You don' even have to multiply it out. It's valid as it is. But you can verify that it does give you a polynomial of degree 3. (because there is just an x, and with not power, in the three terms.. you can imagine that multiplying it out will give some kind of "x^3" term)

  6. Ambition
    • one year ago
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    Thank you

  7. precal
    • one year ago
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    yes but kirbykirby is correct

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