Question

早正六边形ABCDEF中,AB=aAF=b用向量ab表示CD BE BC AD

Answer 1

急用!向量题 DE=-a AD=a+b BC=a/2+b/2 EF=-a/2-b/2 FA=a/2-b/2 CD=b/2-a/2 AC=3a/2+b/2 CE=b/2-3a/2