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Advanced Math
For the highest-level (post-calculus) math questions that don't fall into any other category.
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K
Let X be a set w/ indiscrete topology on X. Prove that f : X --> R is continuous iff f is constant.
kdeezy910
Mar 30, 2019
Replies
2
Views
707
Mar 30, 2019
pka
E
Binary Relations: A={1,2,3} B={a,b} When AxB={(1,a),(2,a),(3,a),(1,b),(2,b),(3,b)}
Eydiaz
Mar 29, 2019
Replies
2
Views
689
Mar 29, 2019
pka
G
Modulus theory: If d|n+1 and d|n^2+2, show that d|3; If n=3m, then gcd(n+1,n^2+2)=1.
GetReal
Mar 24, 2019
Replies
11
Views
2K
Mar 28, 2019
FriendlyAsian
F
G
Telescoping sums
GetReal
Mar 26, 2019
Replies
2
Views
663
Mar 27, 2019
Youtra12
Y
P
Equivalence relation proof: x∼y if and only if x/j =y/k for some positive integers j and k.
Pill
Mar 27, 2019
Replies
1
Views
665
Mar 27, 2019
HallsofIvy
H
Z
A person sold a chair at a loss of 20%. If he had sold it for Rs 50 more, he would have gained 5%. Find the cost price of the chair.
zahid0987
Mar 26, 2019
Replies
1
Views
506
Mar 26, 2019
JeffM
J
O
Including the (0,0) point in linear regression
ojaswita
Mar 23, 2019
Replies
5
Views
989
Mar 26, 2019
ojaswita
O
Z
how many teacups can it fill? plz dear all Teachers/Mentors, answer with complete method.
zahid0987
Mar 20, 2019
Replies
5
Views
2K
Mar 25, 2019
Harry_the_cat
W
Question on Greatest Common Factor
Wwc
Mar 23, 2019
Replies
3
Views
649
Mar 23, 2019
Wwc
W
E
Set up, and evaluate the integral that represents the surface area of rotation of this cardioid about the y-axis.
Elix
Mar 21, 2019
Replies
3
Views
1K
Mar 23, 2019
Elix
E
Topology question
Steven G
Mar 22, 2019
Replies
2
Views
691
Mar 23, 2019
pka
F
need help with this equation!!
FriendlyAsian
Mar 22, 2019
Replies
8
Views
791
Mar 23, 2019
MathProfessor
M
G
Total Water Output
ggrabows
Mar 22, 2019
Replies
1
Views
589
Mar 22, 2019
Denis
D
D
2 proof questions help
D1Kuta
Mar 18, 2019
Replies
7
Views
1K
Mar 20, 2019
JeffM
J
K
HELP: Problems on Simplicial complexes (topology)
kdeezy910
Mar 19, 2019
Replies
0
Views
437
Mar 19, 2019
kdeezy910
K
P
Discrete Mathematics proof question help
promitheus
Mar 16, 2019
Replies
6
Views
823
Mar 18, 2019
pka
Z
Fraction problem?
zahid0987
Mar 18, 2019
Replies
2
Views
491
Mar 18, 2019
Dr.Peterson
Z
How many pieces of string, each 2 3/4m long, can be cut from a string 16 1/2m long?
zahid0987
Mar 18, 2019
Replies
1
Views
787
Mar 18, 2019
Deleted member 4993
D
Z
Sir anyone who can tell me the solving method of these Fraction Word Problems?
zahid0987
Mar 18, 2019
Replies
1
Views
610
Mar 18, 2019
MarkFL
M
Help with maple procedure
Mos5180d
Mar 16, 2019
Replies
4
Views
881
Mar 17, 2019
Mos5180d
M
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