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Acceleration as the second derivative of $e^{-\frac{1}{t^2}}$ [duplicate]
If we have, say, a material point with a zero velocity at the time $t=0$, and this point starts moving at a time $t>0$ , then we look at the force impressed on the point by inspecting the second ...
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Integration over arbitrary domains
In mathematical physics, we sometimes encounter situations where we have integrals of the forms:
$$\text{(case 1):}\ \ \ \ \int\limits_{D} f(x,y,z) dx dy dz =k$$
$$\text{(case 2):}\ \ \ \ \int\...
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