(a) Show that if u1 and u2 are a pair of linearly independent vectors, then v1 = u1+u2
and v2 = u1 u2 are also linearly independent.
(b) Write each of u1 and u2 as a linear combination of v1 and v2 .
我知道a怎么求,但b就不懂了。
能写出具体步骤么?我还是不会算
追答v1=u1+u2
v2=u1-u2
用v1和v2表示u1和u2小学数学你不会?