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anonymous

  • 5 years ago

y=x^3 has a point of inflection at x=o. I know it is true but how i prove it with an statement?

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  1. anonymous
    • 5 years ago
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    You test the point by, take the Second Derivato on it.. and then you can test it by using, a point before 0 and after.. For exempel test with the point -1 and 1

  2. anonymous
    • 5 years ago
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    you get a parabola

  3. anonymous
    • 5 years ago
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    and the parabola touches the origin..is this fine?

  4. anonymous
    • 5 years ago
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    @nabaz thankyou. it means i have to solve it.

  5. anonymous
    • 5 years ago
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    No problem, is it a parabola...???

  6. anonymous
    • 5 years ago
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    yeah , of course, u need proof?

  7. anonymous
    • 5 years ago
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    i thouht it was a Curve ..

  8. anonymous
    • 5 years ago
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    @thinker thankyou

  9. anonymous
    • 5 years ago
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    if so, u have the answer wid u...just try substituting x=-1,1,0,-2,2,...... and you'll get corresponding y values, with which u can get a curve...and that curve is a parabola

  10. anonymous
    • 5 years ago
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    now , is this fine?? @nabaz & @abhinn

  11. anonymous
    • 5 years ago
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    yeah, i last thing... u mean this is a parabola.. http://en.wikipedia.org/wiki/File:X_cubed_plot.svg

  12. anonymous
    • 5 years ago
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    Copie the text.. could get the hole adress..

  13. anonymous
    • 5 years ago
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    no no....not that one...:).try this http://en.wikipedia.org/wiki/File:Parabola.svg this is a parabola...both of go to this link n see

  14. anonymous
    • 5 years ago
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    *both of u

  15. anonymous
    • 5 years ago
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    its like a "U" shape

  16. anonymous
    • 5 years ago
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    Yes but this was a Y = x^3 and its not a parabole

  17. anonymous
    • 5 years ago
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    Yes, but x3 is like a S with is lying downwards.

  18. anonymous
    • 5 years ago
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    yeah...y=x^3 is a symmetric curve, but parabola looks like a "U" ...

  19. anonymous
    • 5 years ago
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    haha.. my bad, i thought u meant that x^3 was a parabola

  20. anonymous
    • 5 years ago
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    its ok:) nabaz

  21. anonymous
    • 5 years ago
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    i wud like to give u both a hint

  22. anonymous
    • 5 years ago
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    u der?

  23. anonymous
    • 5 years ago
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    hint for what?

  24. anonymous
    • 5 years ago
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    to know if an equation is parabola or what..only if u need it:)

  25. anonymous
    • 5 years ago
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    yes, i know i think. ever x^2 x^4 x^6 .. ( not odd nrs )

  26. anonymous
    • 5 years ago
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    exactly :)...good

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