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Questions related from Alexander Bryzgalov
I would like to know, which books are internationally recognized for studying Mechanics, Molecular Physics, Waves, Electricity and Magnetism, Optics and Atomic Physics. Russian favorite authors...
15 August 2017 6,808 7 View
For the validation purporses I need to know any analitical formula of the integral (see the picture) I have tried to find something in different Tables of integrals like Gradshteyn and Ryzhik......
04 August 2017 6,662 0 View
For example, if I use spherical coordinates, r is X1, theta is X2 and phi is X3. But could I use, for example, phi as X1, theta as X2 and r as X3 in the calculus of tensors?
23 March 2015 7,103 5 View
I try to solve numerically the differential equation with mixed derivative. I found one possibility for the mixed derivative like y(i+1,j-1)-y(i,j-1)-y(i-1,j+1)+y(i-1,j). But may be there are...
06 September 2014 9,221 7 View
For example, I have two vectors A and B in 2D rectangular coordinates (x,y). I can calculate the scalar (dot) product as (A,B)=Ax Bx + Ay By. In polar coordinates (r,phi), it will be (A,B) = Ar Br...
01 January 1970 5,039 2 View
As example let's consider very simple task: the solution of one-dimensional stationary Schrodinger equation with step-function potential: $V(x) = 0$ if $x0$ (see...
01 January 1970 5,665 8 View