A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 4 years ago
(i) show that if the circle x^2 + y^2 + 2gx + 2fy + c = 0 touches the y axis, then f^2 = c
(ii) using the result from part (i) find the equation of the circle which contains the points (2, 3) and (2, 5) and which touches the y axis.
i have done part (i) and gotten some of part (ii) but i need help finishing it please
anonymous
 4 years ago
(i) show that if the circle x^2 + y^2 + 2gx + 2fy + c = 0 touches the y axis, then f^2 = c (ii) using the result from part (i) find the equation of the circle which contains the points (2, 3) and (2, 5) and which touches the y axis. i have done part (i) and gotten some of part (ii) but i need help finishing it please

This Question is Closed

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0if you have part I done, the for the second part you have \[x^2+y^2+2gx+2fy+f^2=0\]

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0i have subed the points in and got the 2 equations but now i'm not sure what to do ?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0replace \(x\) by 3, \(y\) by 3 and get an equation in \(f\) and \(g\) repeat with \(x=2\) and \(y=5\)

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0oh i didn't do it, i assumed it would be obvious but maybe not

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0it just comes up math error ?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0let me see if i get it \[4+9+4g+6f+f^2=0\] or \[13+4g+6f+f^2=0\]of \[4g+6f+f^2=13\] for the first one

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0still math error for some reason ?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0\[4+25+4g10f+f^2=0\] \[4g10f+f^2=29\]

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0subtract the second equation from the first i get \[16f=16\] and so \(f=1\)

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0[Math Processing Error] [Math Processing Error] this is what keeps coming up

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0oh i didn't understand what you mean you mean that is what you see me write refresh your browswer

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0for some reason your browser was not reading the latex correctly a refresh should work
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.