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Questions Answered

TedG:
Group Title
can anyone help me construct some polynomials that satisfy f(1,1)=0=f(1,2).
 updated 5 months ago
 17 replies
 2 Medals
Mathematics

TedG:
Group Title
calculus of variation help needed. question in thread on invariant lagrangian.
 updated 7 months ago
 1 reply
 No Medals Yet
Mathematics

estrada93diana:
Group Title
the gas tank of a truck is a cylinder 5ft long with a diameter of 1.5ft. at the gas station, a pump pours gas at the rate of 2 ft^3 per minu…
 updated 7 months ago
 27 replies
 1 Medal
Mathematics

TedG:
Group Title
Let theta in lR and consider the rotational action
X = x cos  y sin ; Y = x sin + y cos :
Find the transformed derivatives Y' and …
 updated 7 months ago
 1 reply
 No Medals Yet
Mathematics

TedG:
Group Title
rayleighritz method. calculus of variations. question in thread.
 updated 8 months ago
 2 replies
 No Medals Yet
Mathematics

noahroberts:
Group Title
a class has 27 students ,fifteen are boys and the rest are girls,what is the ratio of girls to total students?
 updated 9 months ago
 3 replies
 No Medals Yet
Mathematics

chasitybugg13:
Group Title
Pleaseeee Help!!!
Simplify the number using the imaginary unit i.
square root of 16.
 updated 9 months ago
 29 replies
 No Medals Yet
Mathematics

TedG:
Group Title
Prove that if z ∈ C and Re(z^k) ≥ 0 for all k = 1, 2, 3, . . ., then z ∈ [0,∞).
 updated 9 months ago
 18 replies
 No Medals Yet
Mathematics

TedG:
Group Title
Let z = cos((2pi)/n) + i sin((2pi)/n) and n ≥ 2. Show that 1 + z + · · · + z^(n−1) = 0.
 updated 9 months ago
 7 replies
 2 Medals
Mathematics

TedG:
Group Title
group theory. Am I correct in saying (R,o) with x o y: lx . y has no identity element?
 updated one year ago
 21 replies
 No Medals Yet
Mathematics

TedG:
Group Title
guys quick factorization question. can someone please explain how
m(m +1)−n(n+1) = (m −n)(m +n+1)??
 updated one year ago
 3 replies
 1 Medal
Mathematics

TedG:
Group Title
anyone good with group theory specifically finding new generators for a finitely generated abelian group, given a relation matrix. Question…
 updated one year ago
 4 replies
 No Medals Yet
Mathematics

TedG:
Group Title
triple integration. urgent help! question in thread.
 updated one year ago
 14 replies
 No Medals Yet
Mathematics

TedG:
Group Title
vector calculus. I know how to calculate grad(phi), but what about phi(grad). Is this the same?
 updated one year ago
 2 replies
 No Medals Yet
Mathematics

TedG:
Group Title
anyone know anything about critical points, (several variable calculus module). I have a quick question.
…
 updated one year ago
 6 replies
 No Medals Yet
Mathematics

TedG:
Group Title
Is anyone able to point me to a good page with the definition of differentiability for two variables?
 updated one year ago
 1 reply
 No Medals Yet
Mathematics

TedG:
Group Title
W := {(x_1; x_2; x_3) in V l (x_2)=(x_1)(x_3)}
Is W a subspace of R^3 (subspace test)
 updated one year ago
 34 replies
 2 Medals
Mathematics

TedG:
Group Title
W := {(x_1; x_2; x_3) in V l (x_2)=(x_1)(x_3)}
Is W a subspace of R^3 (subspace test)
 updated one year ago
 1 reply
 No Medals Yet
Mathematics

TedG:
Group Title
Let G be a group and let g,h in G with h(g^2)h = (h^2)gh. Show that g = h.
 updated one year ago
 17 replies
 2 Medals
Mathematics

TedG:
Group Title
hard question on attractive central force question in thread!
 updated one year ago
 2 replies
 No Medals Yet
Mathematics

TedG:
Group Title
linear transformation question.*hard*
 updated one year ago
 1 reply
 No Medals Yet
Mathematics

TedG:
Group Title
Linear transformation question. Question in thread. *hard*
 updated one year ago
 3 replies
 No Medals Yet
Mathematics

TedG:
Group Title
Linear algebra question on linear transformations. ? in thread. *Hard*
 updated one year ago
 1 reply
 No Medals Yet
Mathematics

TedG:
Group Title
any able to help with eigenvectors? question in thread.
 updated one year ago
 4 replies
 1 Medal
Mathematics

hisbayyy23:
Group Title
Use the quadratic formula to solve the quadratic equation x^2 − 8x − 4 = 0.
 updated one year ago
 6 replies
 No Medals Yet
Mathematics

TedG:
Group Title
quick question on differentiablity of a function. ? in thread.
 updated one year ago
 2 replies
 No Medals Yet
Mathematics

TedG:
Group Title
I need some help with multivariable calculus. Stuck, and would like some clarification. Question in thread.
 updated one year ago
 19 replies
 2 Medals
Mathematics

iTiaax:
Group Title
*MEDAL WILL BE AWARDED*
The average of 5 numbers is 12. If a 6th number is added, what is the average?
 updated one year ago
 12 replies
 1 Medal
Mathematics

haileemackk:
Group Title
Decide which part of the quadratic formula tells you whether the quadratic equation can be solved by factoring.
−b
…
 updated one year ago
 3 replies
 2 Medals
Mathematics

TedG:
Group Title
quick question on differential calculus. ? in thread.
 updated one year ago
 33 replies
 2 Medals
Mathematics
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