List questions from problem-solving

Published on 15 May 2019 - 20:28

33

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Find solution to exact ODE: $(4bxy(x)+3x+5)\dot{y}+3x^2+8ax+2by(x)^2+3y(x)=0\hspace{0,5cm}a,b\in\mathbb{R}$

Published on 16 May 2019 - 8:55

61

Views

Word Problem - what percent of the women who apply are hired?

Published on 26 Mar 2026 - 6:08

26

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Compounding Formula (and its reverse)

Published on 17 May 2019 - 0:06

62

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Finding roots for $(1+c) \cos(ax)+(1-c) \cos(bx)=0$

Published on 26 Mar 2026 - 6:28

34

Views

Absolute Value Problem Using Only Variables

Published on 27 Mar 2026 - 6:15

68

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Solve a trigonometric equation where one constant can be negative

Published on 22 May 2019 - 17:28

43

Views

A simple but painful calculation.

Published on 23 May 2019 - 12:40

725

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Optimise allocation to minimise variance

Published on 27 Mar 2026 - 1:13

85

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Solve the equation: $x-a^2x-\frac{b^2}{b^2-x^2}+a=\frac{x^2}{x^2-b^2}$

Published on 26 May 2019 - 18:17

57

Views

Explicit solution to nonlinear ODE

Published on 31 May 2019 - 11:14

190

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Find $a,b,c,d$ such that $2^a + 2^b + 2^c = 4^d$

Published on 01 Jun 2019 - 9:45

38

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Solving mathematical economics problem

Published on 23 Feb 2026 - 11:34

102

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Solving system of 10 equations involving some degree 2

Published on 02 Jun 2019 - 7:08

34

Views

Complicated transporting problem.

Published on 25 Mar 2026 - 15:45

List Question

How to derive this relation that I found intuitively?

Find solution to exact ODE: $(4bxy(x)+3x+5)\dot{y}+3x^2+8ax+2by(x)^2+3y(x)=0\hspace{0,5cm}a,b\in\mathbb{R}$

Word Problem - what percent of the women who apply are hired?

Compounding Formula (and its reverse)

Finding roots for $(1+c) \cos(ax)+(1-c) \cos(bx)=0$

Absolute Value Problem Using Only Variables

Solve a trigonometric equation where one constant can be negative

A simple but painful calculation.

Optimise allocation to minimise variance

Solve the equation: $x-a^2x-\frac{b^2}{b^2-x^2}+a=\frac{x^2}{x^2-b^2}$

Explicit solution to nonlinear ODE

Find $a,b,c,d$ such that $2^a + 2^b + 2^c = 4^d$

Solving mathematical economics problem

Solving system of 10 equations involving some degree 2

Complicated transporting problem.

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