Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing

This Question is Closed

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

mlddmlnog Group TitleBest 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

mlddmlnog Group TitleBest ResponseYou've already chosen the best response.0
The answer is 1.
 one year ago

mlddmlnog Group TitleBest 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

zepdrix Group TitleBest 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

zepdrix Group TitleBest 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

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

mlddmlnog Group TitleBest 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

zepdrix Group TitleBest 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

zepdrix Group TitleBest ResponseYou've already chosen the best response.0
yah looks like teacher made silly mistake c: that happens
 one year ago
See more questions >>>
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.