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anonymous

  • 5 years ago

find the derivative of the function at the given number f(x)=1-3x^2 at 2 i am confused i get -6xhsquared-6xh-h^2 all over h, plz help me

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  1. bahrom7893
    • 5 years ago
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    f'(x) = -6x f'(2) = -18

  2. bahrom7893
    • 5 years ago
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    -12

  3. bahrom7893
    • 5 years ago
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    -18 was a typo.. PLEASE CLICK ON BECOME A FAN IF I HELPED! PLEASE!

  4. bahrom7893
    • 5 years ago
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    btw where r u gettin h from?? Or was ur equation: (1-3x)^2 ?

  5. bahrom7893
    • 5 years ago
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    can u post it properly?

  6. anonymous
    • 5 years ago
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    1-3xsquared

  7. anonymous
    • 5 years ago
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    h is in derivative formula?

  8. anonymous
    • 5 years ago
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    are you using [f(x + h) - f(x)]/h

  9. bahrom7893
    • 5 years ago
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    but why?? u will use diff rules for different problems, this one is just f' = -6x

  10. anonymous
    • 5 years ago
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    if you know the short cut, but if you don't you use the formula

  11. bahrom7893
    • 5 years ago
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    oh is he doin the limit definition?

  12. anonymous
    • 5 years ago
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    i think so

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