標題: function [打印本頁] 作者: abcdefg111 時間: 11-3-9 09:33 PM
標題: function
Let f:[-1,1]-> [0,兀], f(x) =arc cosx and g: R->R, g(x)=f(cosx)
a) show左g(x) is even and periodic
b)Find g(x) for all x belongs to[0,兀]
hence, sketch the graph of g(x) for all x belongs to [-2兀,2兀]
我想問咩係arc cos(x)?同埋b)點做 thx!作者: Naozumi 時間: 11-3-10 08:56 AM
arc cosx 即係俾個數 x, 搵番一個角 y pi<= y <=0),令到 cos y = x