# discontinuity

1. ### I What will the electric field be at the surface?

The electric field due to a dipole distribution in volume $V'$ can be viewed as electric field due to a volume charge distribution in $V'$ plus electric field due to a surface charge distribution in boundary of $V'$. ##\displaystyle\mathbf{E}=\int_{V'} \dfrac{\rho...
2. ### I Is the derivative of a discontinuity a delta function?

In these notes, https://ocw.mit.edu/courses/physics/8-04-quantum-physics-i-spring-2016/lecture-notes/MIT8_04S16_LecNotes10.pdf, at the end of page 4, it is mentioned: (3) V(x) contains delta functions. In this case ψ'' also contains delta functions: it is proportional to the product of a...
3. ### Finding discontinuities in functions

Homework Statement Where are the following functions discontinuous? f(x) = (x+2)/√((x+2)x) Homework Equations The Attempt at a Solution f(x) = (x+2)/√((x+2)x) = (x+2)/x√(2x) multiply both denominator and numerator by √(2x) = (x√2+2√x)/(x(2x)) Can I leave it like this and state that x ≠ 0...