List questions from problem-solving

Published on 12 Oct 2014 - 14:09

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Difficulty understanding the solutions to $x'' = -\omega^2 x$

Published on 13 Oct 2014 - 7:29

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The no. of ways dividing a polygon with $n+1$ sides into triangular regions....

Published on 13 Oct 2014 - 14:57

298

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No. of integral solutions of $x_1+x_2+x_3+x_4=20.$

Published on 14 Oct 2014 - 6:12

14

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Obtaining an expression between $s'(n,r)$ and $s(n,r)$

Published on 14 Oct 2014 - 8:41

311

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Problem about problem solving

Published on 16 Oct 2014 - 2:38

67

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Special feature of the function f(z) = $|i + z|^2 + az + 3$

Published on 16 Oct 2014 - 16:52

12

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Discrete algebra and exponents (See body text)

Published on 16 Oct 2014 - 18:44

84

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Solving an unusual equation

Published on 26 Mar 2026 - 8:14

1.4k

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Finding Y coordinate of third triangle point when X coordinate and two other points are already known

Published on 20 Oct 2014 - 6:44

34

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Help with a matrix problem

Published on 20 Oct 2014 - 13:11

22

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$\frac{dy}{dx}=\sum_{k=1}^{\infty}a_k(m-k)x^{m-k-1}$ or $\frac{dy}{dx}=\sum_{k=0}^{\infty}a_k(m-k)x^{m-k-1}$

Published on 20 Oct 2014 - 18:09

69

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How to set up problem involving Poisson RV

Published on 20 Oct 2014 - 19:33

70

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Orthogonal parameterization

Published on 29 Mar 2026 - 3:18

29

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Weighting with restrictions, but no clear objective function?

Published on 22 Oct 2014 - 8:36

List Question

Damped simple harmonic oscillator, phase space

Difficulty understanding the solutions to $x'' = -\omega^2 x$

The no. of ways dividing a polygon with $n+1$ sides into triangular regions....

No. of integral solutions of $x_1+x_2+x_3+x_4=20.$

Obtaining an expression between $s'(n,r)$ and $s(n,r)$

Problem about problem solving

Special feature of the function f(z) = $|i + z|^2 + az + 3$

Discrete algebra and exponents (See body text)

Solving an unusual equation

Finding Y coordinate of third triangle point when X coordinate and two other points are already known

Help with a matrix problem

$\frac{dy}{dx}=\sum_{k=1}^{\infty}a_k(m-k)x^{m-k-1}$ or $\frac{dy}{dx}=\sum_{k=0}^{\infty}a_k(m-k)x^{m-k-1}$

How to set up problem involving Poisson RV

Orthogonal parameterization

Weighting with restrictions, but no clear objective function?

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