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anonymous

  • one year ago

If f(x)=(1/3)x^3, then find k so that f(k)-f(3)=0

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  1. anonymous
    • one year ago
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    what do you think?

  2. anonymous
    • one year ago
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    So you plug in K to the equation and 3 to the equation, and subtract?

  3. amistre64
    • one year ago
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    when does subtraction equate to zero?

  4. anonymous
    • one year ago
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    When both subtracting terms are the same.

  5. anonymous
    • one year ago
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    or equivalent.

  6. amistre64
    • one year ago
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    a-b=0, if a=b yes

  7. amistre64
    • one year ago
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    so f(k) has to be equal to f(3), what is k?

  8. anonymous
    • one year ago
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    So i just plug in a 3 and the answer will be the value of k?

  9. amistre64
    • one year ago
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    f(k) - f(3) = 0, implies that f(k) = f(3) yes

  10. amistre64
    • one year ago
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    1/3 (k^3) - 1/3 (3^3) = 0 1/3 (k^3 - 3^3) = 0 k^3 - 3^3 = 0 k^3 = 3^3

  11. anonymous
    • one year ago
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    so K=3

  12. amistre64
    • one year ago
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    yep ...

  13. anonymous
    • one year ago
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    Haha, okay Thanks!

  14. amistre64
    • one year ago
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    yw

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