Advanced Math

For the highest-level (post-calculus) math questions that don't fall into any other category.
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Homework help! Matrix determinant question?
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3
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5K
Unco
U
A
continuous function f=x-pi for x rtnl, 0 for x irrtnl: show
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0
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1K
AlexHall
A
V
How many different cylinder sizes can be made using values
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4
Views
2K
mmm4444bot
mmm4444bot
S
Find orthonormal vectors q1,q2,q3 such that q1, q2 span col.
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1
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4K
Unco
U
S
Find b1 in S, b2 in ortho. complement of S so that b1+b2=b=
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1
Views
3K
Unco
U
J
Abstract Algebra: group G of order 25; prove cyclic or g^5=e
Replies
3
Views
2K
Jamers328
J
A
Find f(x) w/ lim, x->infty, f(x) exists, lim f'(x) does not
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2
Views
1K
daon
D
N
If f'(x)=0, no sign change at x, then f has pt of inflection
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2
Views
1K
daon
D
M
Discrete Math: For a^2+b^2=c^2, prove a, b, or c is even
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4
Views
6K
mmm4444bot
mmm4444bot
M
Let f satisfy f(x + y) = f(x) + f(y), f continuous at x = 0.
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4
Views
8K
arman_phsa
A
T
ax is congruent b mod n if and only if d|b, d = gcd(a,n)
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1
Views
2K
daon
D
F
linear programing: max Z=x+2y subject to 2.x-y>=2, x+y>=3,
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1
Views
2K
royhaas
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P
LP Problem & ranges of optimality
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2
Views
2K
prettyish
P
T
gcd (a,b) = 1 and a,b are greater than 1
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2
Views
1K
twisted_logic89
T
M
H(n) defined as 1/H(n)=[1/tau(n)]Sum(1/d), n even perfect,
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0
Views
966
maxcat00
M
A
n is perfect even number, q prime: show n/phi(n) = 2q/(q-1)
Replies
2
Views
1K
AlexHall
A
T
solve symbolically for 3 equations
Replies
2
Views
1K
mmm4444bot
mmm4444bot
N
Let (a,b) = 1, ab = c^2; show a, b are perfect squares
Replies
3
Views
1K
Deleted member 4993
D
W
number of ways to seat n couple in row of 2n chairs so that
Replies
3
Views
2K
pka
pka
M
find all twin primes p, p+2, where p+1 is triangular, perfec
Replies
0
Views
1K
marlen19861
M
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