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nickymarden

help.

  • one year ago
  • one year ago

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  1. nickymarden
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    • one year ago
  2. nickymarden
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    the last equation is supposed to be f'(1)=

    • one year ago
  3. nickymarden
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    @amistre64

    • one year ago
  4. amistre64
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    after learning the derivative rules; you never go back to the limit definition ...

    • one year ago
  5. nickymarden
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    i knoow, but that's what he wants! ;/

    • one year ago
  6. amistre64
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    then plug in the (1+h) into the function and algebra it out; its simple enough with that function

    • one year ago
  7. amistre64
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    \[\lim\frac{5-2(1+h)-(5-2(1))}{(1+h)-1}\]

    • one year ago
  8. rs32623
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    well we have \[f'(1)=\lim_{\Delta x \rightarrow 0}(f(1+\Delta x)-f(1))/\Delta x\] we have f(1+delta x)= 5-(2*(1+delta x)) =3-2*(delta x) & f(1)= 3 put these in above equation we have (3-2*(delta x)-3)/delta x delta x gets cancelled & we have -2 as answer..

    • one year ago
  9. nickymarden
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    yeeah, thanks. i got it :))

    • one year ago
  10. amistre64
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    good luck ;)

    • one year ago
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