Terms containing expansion of a function

Subject	English	Russian
math.	a Fourier series is an expansion of a function in a series of sines and cosines	ряд по синусам и косинусам
math.	a the one-dimensional Taylor series expansion of a real function about a point	разложение в ряд
math.	expansion of a function	развёртывание функции
math.	expansion of a function in a series	разложение функции в ряд
math.	the a power series expansion of a function in x	разложение в ряд по степеням