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stapel (Elite Member)
01-14-2016
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For the highest-level (post-calculus) math questions that don't fall into any other category.

1. ### Sticky: Read Before Posting!!

• Replies: 0
• Views: 20,382
Ted
02-21-2006, 12:22 AM
1. ### Inverse of J0

• Replies: 1
• Views: 82
06-19-2018, 06:39 PM
2. ### Matlab: need to enter "w(x)=(wmax*e^(-x/α)) (cos(x/α) + sin (x/α)"

• Replies: 1
• Views: 265
06-14-2018, 07:00 PM
3. ### Complex Numbers: a=1+4i satisfies z^3+5z^2+kz+m=0, k,m real constants

• Replies: 2
• Views: 130
06-12-2018, 08:08 PM
4. ### Question about an De Morgan Law

• Replies: 3
• Views: 284
06-08-2018, 06:21 PM
5. ### Solve for x (multiplication of trigonometric function and logarithmic function)

• Replies: 6
• Views: 261
06-05-2018, 02:50 AM
6. ### Simple Number Theory: "Mr. White is an approximately forty years old father..."

• Replies: 2
• Views: 187
06-04-2018, 01:23 PM
7. ### Deriving equations of motion by using Lagrangian equations

• Replies: 1
• Views: 125
06-03-2018, 08:05 AM
8. ### Functional Analysis: Compactness of Ac:={f∈C1([0,1],ℝ):∫10|f(x)|2dx+∫10|f′(x)|2dx≤c}

• Replies: 0
• Views: 200
05-30-2018, 05:34 PM
9. ### Help on the negation of statement "B union C is an independent set"

• Replies: 2
• Views: 166
05-29-2018, 12:04 PM
10. ### Number Theory: Each digit (0-9) appears once in 2^{29}, except... which?

• Replies: 0
• Views: 162
05-27-2018, 12:51 AM
11. ### Differentiation of the null space: I would like to know the value of d(v)/dt.

• Replies: 5
• Views: 331
05-26-2018, 10:41 AM
12. ### Identifying invalid expressions: Let F and U be vector field,scalar field, resp'ly.

• Replies: 2
• Views: 177
05-25-2018, 03:48 PM
13. ### Solve system of eqns: xz-2yt=3, xt+yz=1; Find x2+y2+z2+t2 (x,y,z,t integers)

• Replies: 1
• Views: 381
05-24-2018, 12:08 AM
14. ### Basic Algebra? f:Z+ ---> Z*, s.t. f(n)=p/q, p + q = n, 0< p/q < 1 and gcd(p, q) =1

• Replies: 2
• Views: 232
05-23-2018, 07:52 PM
15. ### Which curve is this k(s)=s

• Replies: 2
• Views: 169
05-23-2018, 02:43 PM
16. ### A Challenge worth the time

• Replies: 2
• Views: 218
05-17-2018, 07:06 PM

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