UNBELIEVABLE calculus result using Feynman integration 

Which is why I've never had to get up in the middle of the night to go out and buy milk

😂😂😂

I was not expecting that😂

That's easy.....making mistakes while solving other integrals

chicken egg problem?@@maths_505

Or do the problem in such an insane way that you just generate more integrals from the target integral.

Oh yeah I've tried that too

Is the Mellin transform one of the few counterexamples of Stigler's law?

It doesn't converge to a nice closed form

@@maths_505 oh that’s maybe why I couldn’t find one… thanks !!!

I know it's the same as the integral from 0 to 1 of x^-x

Partial differentiation is the same as normal diff. except you treat all other parameters as constant. Total diff. (with upright d/dx) of a parameter involves the use of the chain rule. Technically you do integrate partially whenever you integrate indefinitely. int[f'(x,y)]dx = f(x,y) + g(y) because the derivative of g(y) wrt x is 0. We just call it C normally because we don't need to introduce more complicated paramters than a constant most of the time. This fact occurs in some mixed differential equations.

Partial differentiation is just like normal differentiation but only according to one variable aka treating every other variable as a constant

Well you could watch em in the order of upload