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In some places in physics like proving the wave equation,we see that the physicist divides the equation by [itex] dx [/itex] or [itex] \partial x [/itex] or maybe cancels some of them and then says with a smile:You shouldn't tell a mathematician!
I want to know the ideas of mathematicians about that and want to know why its wrong?
thanks
I want to know the ideas of mathematicians about that and want to know why its wrong?
thanks