tacogym27101990
Member
Re: 回复: Re: 4 unit maths terms...joking
no one cares, it was a jokeForbidden. said:The Si function is used in signal processing and by surveyors for GPS.
Si(x) = ∫x f(t) dt
where f(t) = sin t / t if t doesn't equal 0
and f(t) = 1 if t = 0
Si has a stationary point at π but you can classify this stationary point if you want.