• February 16th, 2020, 22:50
Thanks for the help GJA! At first I struggled with what you meant by ... " By the continuity argument, $f(x)<0$ for all such $x$ ... " But then...
3 replies | 150 view(s)
• February 15th, 2020, 04:25
I am reading Cesar E. Silva's book entitled "Invitation to Real Analysis" ... and am focused on Chapter 4: Continuous Functions ... I need help...
3 replies | 150 view(s)
• February 10th, 2020, 10:39
So the vertices of the quadrilateral, in particular, $C$, don't lie on the grid nodes? Then I doubt there is a nice answer. So I can invent any...
2 replies | 82 view(s)
• February 1st, 2020, 19:07
Thanks MountEvariste for an informative and really helpful reply ... Now working through what you have written ... Thanks again ... Peter
2 replies | 262 view(s)
• February 1st, 2020, 03:14
I am reading Andrew Browder's book: "Mathematical Analysis: An Introduction" ... ... I am currently reading Chapter 3: Continuous Functions on...
2 replies | 262 view(s)
• January 27th, 2020, 00:44
After a little reflection I have realized that f is continuous at any point x if and only if f(x-) = f(x+) ... so if f is discontinuous at d then...
1 replies | 245 view(s)
• January 27th, 2020, 00:04
I am reading Andrew Browder's book: "Mathematical Analysis: An Introduction" ... ... I am currently reading Chapter 3: Continuous Functions on...
1 replies | 245 view(s)
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