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raxisBest ResponseYou've already chosen the best response.0
Where's the question? ^^;
 one year ago

mlddmlnogBest ResponseYou've already chosen the best response.0
The derivative of \[ f(x)=\frac{ x ^{4} }{ 3 }\frac{ x ^{5} }{ 5 }\] attains its maximum value at x=?
 one year ago

mlddmlnogBest ResponseYou've already chosen the best response.0
I found the derivative, and set it equal to zero, but 1 was not one of the values i got... :(
 one year ago

zepdrixBest ResponseYou've already chosen the best response.0
Ya the answer key is incorrect, it appears to have a max at \(x=\dfrac{4}{3}\). I keep getting x=3/4 when I work it out though, so I gotta figure out where my mistake is.
 one year ago

zepdrixBest ResponseYou've already chosen the best response.0
OH the problem was probably SUPPOSE TO BE,\[\large f(x)=\frac{x^4}{\color{salmon}4}\frac{x^5}{5}\]
 one year ago

zepdrixBest ResponseYou've already chosen the best response.0
Because that clearly gives a critical point at x=1
 one year ago

mlddmlnogBest ResponseYou've already chosen the best response.0
ohh if you do it like that, do you get the right answer? ohh ok :pgoshh these problems :(
 one year ago

zepdrixBest ResponseYou've already chosen the best response.0
Oh yah it's x=4/3. I see where my mistake was :O Were you able to get that value?
 one year ago

zepdrixBest ResponseYou've already chosen the best response.0
yah looks like teacher made silly mistake c: that happens
 one year ago
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