设向量a=(3,5,-4),b=(2,1,8)计算3a-2b,a-b
问题描述:
设向量a=(3,5,-4),b=(2,1,8)计算3a-2b,a-b
答
3a-2b=(5,13,-28) a-b=(1,4,-12)
设向量a=(3,5,-4),b=(2,1,8)计算3a-2b,a-b
3a-2b=(5,13,-28) a-b=(1,4,-12)