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One more calc question for ST -- (edited)

Posted by Beaker (aka Anniebecca) Nov 23 '21, 17:54

For what values of x is the graph of y = xe (exponent -4x)
concave down?
values = (-infinity,(1)/(10)]

(Give your answer as an interval or a list of intervals, e.g., (-infinity,8] or (1,5),(7,10) .)

Responses:

wife got it! -- nm - Beaker Nov 23, 17:58 3
- Did she get (-inf, +1/2)? -- nm - Cowboy BeBaron Nov 23, 18:07 1
  - yes sir! -- nm - Beaker Nov 23, 18:07
- Marry that woman! Oh, nevermind. -- nm - VMan Nov 23, 17:58
Uh, yeah. I'll break out my out calculus texts and get back to you. Sorry. -- nm - VMan Nov 23, 17:58 3
- wife Googled it :) -- nm - Beaker Nov 23, 17:58 2
  - Cool, sorry about earlier. Wasn't sure if they were introducing calculus concepts but not doing the actual derivatives, evaluations and meanings. -- nm - VMan Nov 23, 18:02 1
    - no worries; I appreciate any and all assistance -- nm - Beaker Nov 23, 18:04

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One more calc question for ST -- (edited)

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