Ask your own question, for FREE!
Mathematics 8 Online
OpenStudy (anonymous):

Show that A={(x,y)R^2/ 1

OpenStudy (anonymous):

Take a=(x,y) in A. Let \[ c =\sqrt{x^2+y^2} \\ r=\frac 1 2 Minimum\{ c-1, 7-c\} \] The disk of center a and radius r is contained in A. We showed that every element in a belongs to disk that is contained in A. So A is open.

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Latest Questions
laylasnii13: Who wanna write or make a song with me???
3 hours ago 0 Replies 0 Medals
kaelynw: art igg
2 hours ago 9 Replies 1 Medal
XShawtyX: Art
21 hours ago 6 Replies 0 Medals
Nina001: teach me how to draw or just tell me the basics
23 hours ago 2 Replies 1 Medal
XShawtyX: We doing another drawing gimme ideas to add to this
1 day ago 9 Replies 1 Medal
RAVEN69: What is x 3+y 3+z 3=k
1 day ago 20 Replies 1 Medal
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!