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user3613025
  • Member for 7 years, 4 months
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5 votes
1 answer
3k views

Is there always a direction in which the directional derivative of a function is zero?

3 votes
0 answers
89 views

Finding the expansion coefficients of the decomposition of a 3D Gaussian wavepacket in the eigenfunctions of the Hydrogen atom

1 vote
2 answers
2k views

Multivariable calculus finding steepest slope with no given coordinates

1 vote
0 answers
253 views

Integration of Spherical Harmonics with a Gaussian(Quantum Mechanics)

1 vote
1 answer
35 views

Finding the result of a definite integral when its limit is changed and integrand is not symmetrical

1 vote
1 answer
72 views

How to solve this second order linear differential equation?

0 votes
1 answer
420 views

Change of variables in Heat Equation (and Fourier Series)

0 votes
1 answer
44 views

How to do change of variables of a j.p.d.f with N pdf(s)?

0 votes
1 answer
279 views

Classical Lagrangian invariant under transformation

0 votes
2 answers
145 views

Double integral $\int{e^{t^2}}$over a triangle

0 votes
1 answer
149 views

Quantum Mechanics - Orthonormal Basis integration and Kronecker delta