Using client-server architecture, write a multi-threaded server which returns results of mathematical functions such as sqrt(x),sin(x), cos(x), tan(x), etc. and a companion client to invoke these functionalities from a remote machine.

Compute nearest points to ellipse 椭圆逼近 phi = ellipse_phi (X, a, b, phi{}, myeps{sqrt(myeps)}) compute angles for nearest points on ellipse to given points X

本程序包括大部份复数处理函数：abs（）、arg（）、conj（）、sin（）、cos（）、sinh（）、cosh（）、exp（）、log（）、log10（）、norm（）、polar（）、pow（）、sqrt（）等。-look it yourself.

single app that implements a calculator that evaluates an expression written in natural way. For example 3+5*(sqrt(9)) where sqrt y square root. any question? write me at croccifixio29@hotmail.com-single app that implements a calculator that evaluat