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pottersheep

  • 2 years ago

Grade 12 Advanced Functions help please! Use the degree and the sign of the leading coefficient to determine the value of the constant finite differences. f(x) = -4x^3 +2x^2 - x +5

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  1. pottersheep
    • 2 years ago
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    How do I do that? I know the degree is 3, and the sign is negative... Thanks!

  2. niravshah08
    • 2 years ago
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    I don't know what constant finite diff. Is but i think it will be -2x. I got this by dividing the first term by the second term

  3. pottersheep
    • 2 years ago
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    no that's not the answer but thanks anyways

  4. pottersheep
    • 2 years ago
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    Does anyone else know?

  5. hal_stirrup
    • 2 years ago
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    using calculas .

  6. hal_stirrup
    • 2 years ago
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    is that ok?

  7. CliffSedge
    • 2 years ago
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    It can be done without calculus.

  8. hal_stirrup
    • 2 years ago
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    sure

  9. hal_stirrup
    • 2 years ago
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    You can make a long table of values

  10. CliffSedge
    • 2 years ago
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    I think a short-cut is to multiply the leading coefficient by twice the degree.

  11. CliffSedge
    • 2 years ago
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    It works for this example and another that I tried, but it might not work in all cases.

  12. hal_stirrup
    • 2 years ago
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    -4x3x2x1

  13. hal_stirrup
    • 2 years ago
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    Since the degree of the function is 3 . we look at -4x^3

  14. hal_stirrup
    • 2 years ago
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    the 3th diferences are constant.

  15. pottersheep
    • 2 years ago
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    Thanks ~ I haven't taken calculus yet so I just had to make really long tables for all of my questions. I got the right answers tho! :)

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