anonymous
  • anonymous
The function f(x)=(4x+7)e^−6x has one critical number. Find it.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
is it \[f(x)=(4x+7)e^{-6x}\]?
anonymous
  • anonymous
if so, since \[e^{-6x}>0\] it is where \[4x+7=0\]
anonymous
  • anonymous
yes it is. I found the answer actually it turned out to be 4x+7 multiplied out, which gave me 38/-24

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anonymous
  • anonymous
? it should be \[4x+7=0\] \[4x=-7\] \[x=-\frac{7}{4}\]
anonymous
  • anonymous
i'm not sure why our answers differ but I assure you I got the problem right
anonymous
  • anonymous
I used the product rule then factored and set it equal to zero

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