百度 目前，云度新能源已经推出一款纯电小型SUV云度1，而在2018年3月云度新能源将再推出一款纯电动小型SUV云度3，新车此前已在2017年上海车展正式发布，据悉新车将搭载由电动机+40千瓦时的三元锂电池组成的动力系统，电动机最大功率90千瓦，峰值扭矩270牛米，等速工况下续航里程可超300公里。

For any function (where and are any sets), the kernel (also called the null space) is defined by

so the kernel gives the elements from the original set that are mapped to zero by the function. is therefore a subset of

The related image of a function is defined by

is therefore a subset of .