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Free Math Help
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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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D
Prove sum [k=1,n] |sin(k)| >= (n+1)/2 - 1/(2 sin(1))
Dadanny
Nov 12, 2017
Replies
1
Views
816
Nov 14, 2017
stapel
P
Spreading a virus
Pi314
Nov 7, 2017
Replies
1
Views
655
Nov 10, 2017
stapel
W
Fermenter Vent Problem
Winemaker
Nov 8, 2017
Replies
1
Views
554
Nov 10, 2017
stapel
K
"Find y and x such that by + ax = gcd(a,b) in the Gaussian integers"
ksdhart2
Oct 22, 2017
Replies
1
Views
679
Nov 7, 2017
barrick
B
T
Residues, describing contours: Find res[exp(1/z)/z^2-16,4], res[exp(1/z)/z^2-16,-4],
tuaisceart
Nov 6, 2017
Replies
3
Views
883
Nov 7, 2017
tkhunny
A
Supremum and Infimum of 1/n+1/m
Alfredo Dawlabany
Nov 4, 2017
Replies
5
Views
3K
Nov 5, 2017
ksdhart2
K
C
Ordinals and Godel's Incompleteness theorem
Crispin
Nov 4, 2017
Replies
0
Views
469
Nov 4, 2017
Crispin
C
S
Recurrence relation for quaternary strings length n sum divisible by 3
sunrae
Oct 29, 2017
Replies
1
Views
676
Nov 4, 2017
barrick
B
S
What function/equation describes this plot?
skyeaton
Nov 2, 2017
Replies
4
Views
885
Nov 3, 2017
gregk
G
S
infinitely easy: Infinity of numbers between 0&1; give 1st 2 after 0, last 2 before 1
Swiss560
Oct 27, 2017
Replies
2
Views
945
Oct 29, 2017
JeffM
J
M
Let a be least residue modulo 5. Compute the least residue of a^5 for each a.
makenqau
Oct 25, 2017
Replies
1
Views
627
Oct 25, 2017
tkhunny
W
Domain & Range; Boolean algebra; probability sample space; equiv. relation
webbiz
Oct 23, 2017
Replies
1
Views
903
Oct 23, 2017
Subhotosh Khan
S
A
Supremum and Infimum: Denote B={|x-y|;x∈A and y∈A}....
Alfredo Dawlabany
Oct 21, 2017
Replies
6
Views
2K
Oct 21, 2017
Alfredo Dawlabany
A
F
Probability of drawing chosen three balls from bag
Fonda1971
Oct 19, 2017
Replies
4
Views
999
Oct 20, 2017
Fonda1971
F
3
Circle intersections
37ten
Oct 18, 2017
Replies
1
Views
582
Oct 18, 2017
Subhotosh Khan
S
A
I think I found the highest known prime number.
Avahlanch
Sep 29, 2017
Replies
7
Views
2K
Oct 1, 2017
JeffM
J
N
how to prove this without mathematical induction - Split
numeriprimi
Sep 30, 2017
Replies
1
Views
659
Sep 30, 2017
stapel
E
Proving a/c + b/c = a+b/c. At WHAT point does one learn to PROVE this VS have faith
einstein
Aug 7, 2017
2
Replies
21
Views
5K
Sep 30, 2017
JeffM
J
S
How would I match up the following sentences with their respective negations?
sktsasus
Sep 28, 2017
Replies
1
Views
737
Sep 29, 2017
tkhunny
L
Matched Filter for the signal x(t)=t*rect[(t-T/2)/T].
LauraN
Sep 29, 2017
Replies
1
Views
768
Sep 29, 2017
Ishuda
I
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