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ta123

  • 3 years ago

need help on the attachment

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  1. ta123
    • 3 years ago
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  2. satellite73
    • 3 years ago
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    was the last answer wrong?

  3. hoda
    • 3 years ago
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    hkd d d d d d d dddddd i

  4. ta123
    • 3 years ago
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    I'm nut sure but did you check all the graphs to make sure your first answer was correct

  5. ta123
    • 3 years ago
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    oops! I misspelled not to nut,

  6. ta123
    • 3 years ago
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    satellite where you at?

  7. satellite73
    • 3 years ago
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    i only saw three graphs. are there more?

  8. ta123
    • 3 years ago
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    yes

  9. ta123
    • 3 years ago
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    there 5 graphs to choose from

  10. hoda
    • 3 years ago
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    hi

  11. satellite73
    • 3 years ago
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    ok it is still b i think

  12. satellite73
    • 3 years ago
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    you know that the second derivative is always positive. this tells you that the function is always concave up

  13. satellite73
    • 3 years ago
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    4 and 5 both have parts that are concave down. so they are out as well.

  14. ta123
    • 3 years ago
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  15. satellite73
    • 3 years ago
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    yeah i see them now. 3, 4, 5 all have parts that are concave down, but you are told that \[f''(x)>0\] for all x not equal 0, so your function must be concave up

  16. satellite73
    • 3 years ago
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    only 1 and 2 are always concave up, so it has to be the second one for the reason i stated earlier

  17. ta123
    • 3 years ago
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    Thanks I could you help me on a similar problem dealing with finding the relative minimum on a graph

  18. ta123
    • 3 years ago
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  19. GoBlue
    • 3 years ago
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    Relative min is where the function changes from decreasing to increasing, or where the derivative changes from negative to positive.

  20. ta123
    • 3 years ago
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    correct

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