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Invenietis
  • Member for 3 years, 6 months
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13 votes
1 answer
4k views

Taking constants out of indefinite integrals

6 votes
1 answer
375 views

Deriving the discretized equation of the Geometric Brownian Motion EDE

6 votes
1 answer
5k views

Parametric equation of an ellipse in the 3D space

4 votes
1 answer
248 views

Change of variables in a Taylor's polynomial

4 votes
2 answers
445 views

Using taylor series for approximating implicit functions

3 votes
1 answer
188 views

Using parity properties to evaluate the inner product of spherical harmonics

3 votes
0 answers
80 views

Integrating the derivative of a function with respect the components of a vector

3 votes
1 answer
289 views

Burgers' equation: explicit finite difference method without using the Hopf-Cole transformation

3 votes
1 answer
173 views

Is the sum of infinite recurring decimals also a recurring decimal?

3 votes
2 answers
340 views

Orthogonal transformations and metric tensor: prove that $U^{T} g U=g$

2 votes
3 answers
882 views

Relations between partial derivatives used in the Maxwell relations

2 votes
2 answers
36 views

Partial derivatives in a function with "linked" variables

2 votes
0 answers
47 views

Obtaining the solutions of the original problem from the solutions to the associated Sturm-Liouville problem

2 votes
1 answer
371 views

Do the curvature and the normal curvature of a curve have a similar intuitive meaning?

2 votes
1 answer
50 views

Methods of solving an initial-value problem for a separable first-order ODE

1 vote
1 answer
77 views

Matrix solution of a system of linear equations for an arbitrarily chosen set of variables

1 vote
1 answer
211 views

Implicit equation of a rotated ellipse

1 vote
1 answer
527 views

Visual meaning of simple surfaces in Differential Geometry

1 vote
2 answers
141 views

Why can the area projected onto a plane be calculated with the dot product of the vector area and the unit vector of the plane?

1 vote
1 answer
169 views

Is the the transformation of the transposed matrix equal to transpose of the transformed matrix?

1 vote
0 answers
73 views

Curvature vector in terms of a general parametrization

1 vote
3 answers
281 views

Is it true that $(\mathbf{v}\cdot\nabla)\mathbf{v} = \mathbf{v} \cdot (\nabla \mathbf{v})$?

1 vote
0 answers
65 views

Limits for the parameters of the parametric equation of a surface of revolution

1 vote
3 answers
202 views

Show that $(\mathbf{a}·\mathbf{a})(\mathbf{b}·\mathbf{b})-(\mathbf{a}·\mathbf{b})^2=(\mathbf{a}\times\mathbf{b})·(\mathbf{a}\times\mathbf{b})$?

1 vote
1 answer
85 views

Prove that $(\hat A \hat B + \hat B \hat A )$ is self-adjoint if $\hat A$ and $\hat B$ are self-adjoint

1 vote
2 answers
176 views

Taylor Series Method for a first order ODE, not centered at $0$

1 vote
1 answer
302 views

Why to use dummy variables in definite integrals?

0 votes
3 answers
35 views

General method for finding the basis of the image of a linear transformation

0 votes
1 answer
2k views

Parametric equation of the ellipse: clockwise or counterclockwise rotation when varying the parameter

0 votes
1 answer
50 views

Different results by calculating a geometric sum