User Dovendyr

6 votes

4 answers

568 views

Trigonometric integral with cosinus

calculus

asked Jun 19, 2018 at 7:28

3 votes

2 answers

86 views

Difficult double integration

calculus

asked Jun 28, 2018 at 8:38

3 votes

2 answers

120 views

Particular solution of PDE

partial-differential-equations

asked May 30, 2021 at 9:38

2 votes

4 answers

91 views

Solving ODE with initial condition, one step wrong

ordinary-differential-equations

asked Apr 14, 2021 at 9:49

2 votes

1 answer

172 views

Fourier series specific value

fourier-analysis

asked Apr 23, 2021 at 8:01

2 votes

1 answer

32 views

Fourier serie for specific value (follow up question)

fourier-analysis

asked Apr 24, 2021 at 8:46

2 votes

2 answers

146 views

Double integration over a "triangular" semialgebraic set

calculus multivariable-calculus definite-integrals

asked Jul 3, 2018 at 5:07

2 votes

2 answers

97 views

How to see that $1$ is a solution of $x^{x^2−3x} = x^2$

logarithms

asked May 10, 2019 at 5:21

2 votes

2 answers

500 views

Computing double integral using linear algebra

linear-algebra integration multivariable-calculus definite-integrals

asked Jul 6, 2018 at 9:32

2 votes

1 answer

182 views

Prove that for n ≥ 3, $K_n$ is the union of cycles $C_3,\ldots,C_{n − 1}$, a path of length 2 and an edge.

discrete-mathematics graph-theory

asked Aug 29, 2020 at 13:13

2 votes

2 answers

40 views

Time function of Laplace tranform $F(s) = \frac{1}{s^2-1}$

laplace-transform

asked Jan 24, 2021 at 18:23

1 vote

1 answer

83 views

Inverse Laplace of $p_1\cdot p_2/[(x+p_1)(x+p_2)]$

inverse-laplace

asked Jan 29, 2021 at 16:22

1 vote

2 answers

86 views

Calculating the length of a curve

calculus

asked Jun 26, 2018 at 8:04

1 vote

2 answers

103 views

Volume of revolution around $y$-axis

calculus

asked Jun 26, 2018 at 8:28

1 vote

1 answer

397 views

Find fundamental matrix of homogenous system

ordinary-differential-equations eigenvalues-eigenvectors

asked Apr 19, 2021 at 10:36

1 vote

1 answer

35 views

Repeated eigenvalue = 0

eigenvalues-eigenvectors

asked Apr 21, 2021 at 9:48

1 vote

1 answer

36 views

Proof of $ \arg (G(j \omega))=-\omega\left(t_{2}-t_{1}\right) $

complex-numbers

asked Feb 28, 2021 at 13:17

1 vote

1 answer

857 views

Water tank problem (right ODE, wrong solution)

ordinary-differential-equations

asked Apr 12, 2021 at 9:11

0 votes

2 answers

1k views

All tricks to find eigenvalues in 3x3 in a faster way?

matrices eigenvalues-eigenvectors

asked Apr 19, 2021 at 8:13

0 votes

2 answers

96 views

Change of variable with circle and ln

integration multivariable-calculus polar-coordinates

asked Jul 3, 2018 at 8:42

0 votes

1 answer

42 views

Estimating with simpson rule

simpsons-rule

asked May 10, 2019 at 13:24

0 votes

1 answer

65 views

Solve initial value problem

numerical-methods eulers-method

asked May 22, 2019 at 7:11

0 votes

0 answers

80 views

Relation between Hamiltonian and Eulers paths

discrete-mathematics graph-theory

asked Aug 26, 2020 at 6:34

0 votes

1 answer

289 views

Connected graph with two vertices of odd degrees, not containing an Euler path?

graph-theory eulerian-path

asked Aug 26, 2020 at 7:46

0 votes

1 answer

47 views

Inverse Laplace with formula table

inverse-laplace

asked Feb 19, 2021 at 8:28

0 votes

2 answers

39 views

Modelling problem (ODE)

ordinary-differential-equations

asked Jan 25, 2021 at 18:38

0 votes

1 answer

25 views

Inverse Laplace of $\frac{K}{s(T s+1)}$

inverse-laplace

asked Jan 28, 2021 at 15:39

0 votes

1 answer

81 views

Laplace transform to determine system output

laplace-transform initial-value-problems

asked Jan 24, 2021 at 12:27

0 votes

2 answers

54 views

Calculate limits with Taylor

limits taylor-expansion

asked Feb 7, 2019 at 8:35

0 votes

2 answers

27 views

Parametric equation for y^2 = x+1 [closed]

parametric

asked Feb 26, 2019 at 14:42

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31 Questions

Trigonometric integral with cosinus

Difficult double integration

Particular solution of PDE

Solving ODE with initial condition, one step wrong

Fourier series specific value

Fourier serie for specific value (follow up question)

Double integration over a "triangular" semialgebraic set

How to see that $1$ is a solution of $x^{x^2−3x} = x^2$

Computing double integral using linear algebra

Prove that for n ≥ 3, $K_n$ is the union of cycles $C_3,\ldots,C_{n − 1}$, a path of length 2 and an edge.

Time function of Laplace tranform $F(s) = \frac{1}{s^2-1}$

Inverse Laplace of $p_1\cdot p_2/[(x+p_1)(x+p_2)]$

Calculating the length of a curve

Volume of revolution around $y$-axis

Find fundamental matrix of homogenous system

Repeated eigenvalue = 0

Proof of $ \arg (G(j \omega))=-\omega\left(t_{2}-t_{1}\right) $

Water tank problem (right ODE, wrong solution)

All tricks to find eigenvalues in 3x3 in a faster way?

Change of variable with circle and ln

Estimating with simpson rule

Solve initial value problem

Relation between Hamiltonian and Eulers paths

Connected graph with two vertices of odd degrees, not containing an Euler path?

Inverse Laplace with formula table

Modelling problem (ODE)

Inverse Laplace of $\frac{K}{s(T s+1)}$

Laplace transform to determine system output

Calculate limits with Taylor

Parametric equation for y^2 = x+1 [closed]