fxfy的精选

问题详情：下列函数中，满足“f(x＋y)＝f(x)f(y)”的单调递增函数是()A．f(x)＝x3                          B．f(x)＝3xC．f(x)＝x                        D．f(x)＝()x【回答】B[解析]...