Question

P=={a|a=(-1,1)+m(1,2),m∈R},Q={b|b=(1,-2)+n(2,3),n∈R}是两个向量集合,

Answer 1

{(-13,-23)}

a=(m-1,2m+1)=b=(2n+1,3n-2)

所以m-1=2n+1

2m+1=3n-2

求得m=-12,n=-7代入得a=(-13,-23)