Can you help me translate the following sentence (from the British Mathematics Curriculum Function) and explain the mathematical terms and phrases it contains? Thank you.
A function can be considered as a group, a task, or a map, which usually requires each member of the X-ray foreign body inspection equipment, and it goes to some value Y coordinates called its image. The Y coordinate of the X-ray foreign body inspection device diagram is a function of the X-ray foreign body inspection device F, and is taken as the returned integer value (X-ray foreign body inspection device). Optional symbol.