A community for students.
Here's the question you clicked on:
 0 viewing
mathmath333
 one year ago
Functions
mathmath333
 one year ago
Functions

This Question is Closed

mathmath333
 one year ago
Best ResponseYou've already chosen the best response.1if \(\large \color{black}{\begin{align} f(x+y,xy)=xy \hspace{1.5em}\\~\\ \end{align}}\) find \(\large \color{black}{\begin{align} f(x,y)=? \hspace{1.5em}\\~\\ \end{align}}\)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ok, have you tried it yet?

mathmath333
 one year ago
Best ResponseYou've already chosen the best response.1i replaced x+y=a , xy=b and got \(f(a,b)=axabyx+yb\)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0very good, now eliminate a and b on the RHS

mathmath333
 one year ago
Best ResponseYou've already chosen the best response.1how do i eliminate that ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0sry eliminate x and y, well you can find x and y in terms of a and b

mathmath333
 one year ago
Best ResponseYou've already chosen the best response.1i have a question , can i just replace a and b by 'x' and 'y' \(f(a,b)=axabyx+yb\\ f(x,y)=x^2xyyx+y^2=(xy)^2\)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0emm no, look at to your first substitution

mathmath333
 one year ago
Best ResponseYou've already chosen the best response.1i got x=(a+b)/2, y=(ab)/2 is that correct substitution

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0that's right, put those back in the f(a,b)

mathmath333
 one year ago
Best ResponseYou've already chosen the best response.1got \(f(a,b)=\dfrac{a^2b^2}{4}\)

mathmath333
 one year ago
Best ResponseYou've already chosen the best response.1i put now (a,b)> (x,y) ?
Ask your own question
Sign UpFind more explanations on OpenStudy
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.