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anonymous

  • 5 years ago

y=-x^2+5x+6 vertex?

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  1. anonymous
    • 5 years ago
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    Vertex means the lowest point?

  2. anonymous
    • 5 years ago
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    or the highest pt

  3. anonymous
    • 5 years ago
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    the minimum or maximum point.. maximum in this case

  4. anonymous
    • 5 years ago
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    so it will be (-b/2a, -D/4a)

  5. anonymous
    • 5 years ago
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    or you can just apply d/dx

  6. anonymous
    • 5 years ago
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    -2x + 5 = 0 x = 5/2

  7. anonymous
    • 5 years ago
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    can we differentiate it?

  8. anonymous
    • 5 years ago
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    the problem is im getting 49/4 when x=5/2 and my book says the answer is 29/4... no differentiation

  9. anonymous
    • 5 years ago
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    so it will be (-b/2a, -D/4a).how?

  10. anonymous
    • 5 years ago
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    hmm...-(5/2)^2 + 25/2 + 6 = -25/4+25/2+6 = 25/4 + 6 =49/4, you're right!

  11. amistre64
    • 5 years ago
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    y=-(5/2)^2+5(5/2)+6 y = -25/4 + 25/2 +6......... yup

  12. anonymous
    • 5 years ago
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    See: do you know differentiation?

  13. anonymous
    • 5 years ago
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    ya very well.

  14. anonymous
    • 5 years ago
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    Ok. so when you differentiate ax^2+bx+c and equate it to 0, you get -b/2a Putting this in fn: you get -D/4a

  15. anonymous
    • 5 years ago
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    -D/4a?how?

  16. anonymous
    • 5 years ago
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    See: did u get y i differentiated?

  17. anonymous
    • 5 years ago
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    plz tell me the reasion?

  18. anonymous
    • 5 years ago
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    ok when we differentiate, we get the eqn of the slopes of that eqn on respective pts

  19. anonymous
    • 5 years ago
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    why we want to know slope?

  20. anonymous
    • 5 years ago
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    tell me what you know about derivative at a pt?

  21. anonymous
    • 5 years ago
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    i have done intermediate level

  22. anonymous
    • 5 years ago
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    ok. its the limiting secant to the graph, the tangent!

  23. anonymous
    • 5 years ago
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    bec of tangent we differentiate ya?

  24. anonymous
    • 5 years ago
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    not actually, derivative is also the rate, you can say, See the more slope a pt has, wouldn't it turn more? What I mean is if it has more slope it will increase faster!

  25. anonymous
    • 5 years ago
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    ok thanks amogh

  26. anonymous
    • 5 years ago
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    So you understand why we equate the slope to 0?

  27. anonymous
    • 5 years ago
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    actually iam not intouch.

  28. anonymous
    • 5 years ago
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    hmm...np was i clear enough?

  29. anonymous
    • 5 years ago
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    thanks alot amogh

  30. anonymous
    • 5 years ago
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    LOL, I'm askin you did u understood wat i said now?

  31. anonymous
    • 5 years ago
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    or i was too fast or slow?

  32. anonymous
    • 5 years ago
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    u was splended amogh

  33. anonymous
    • 5 years ago
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    Determine the vertex of the given equation. y = x2 + 9? im Haveing trouble.

  34. anonymous
    • 5 years ago
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    x^2

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