题目

The ancient Greek philosopher Plato said , “Music is a moral law． It gives soul to the universe, wings to the mind ,flight to the imagination, and charm and joy to life and to everything．” This is one of Don Spencer’s favorite mottos that he firmly believes． For the former Play School presenter and founder of the Australian Children’s Music Foundation, this motto forms the basis of the message he is trying to put across—that music should be a necessary part of a child’s education． We know that music brings joy and comfort, and makes us feel happy, Spencer says． Bu22、曲线y=x3+3x2+6x-10的切线中，求斜率最小的切线方程．