已知abc为任何非零向量,证明|a-b-c|》| |a| - |b| - |c| |
问题描述:
已知abc为任何非零向量,证明|a-b-c|》| |a| - |b| - |c| |
答
|a-b-c|>=| |a - b| - |c| | |a-b| >= |a| - |b| |a-b-c|》| |a| - |b| - |c| |
已知abc为任何非零向量,证明|a-b-c|》| |a| - |b| - |c| |
|a-b-c|>=| |a - b| - |c| | |a-b| >= |a| - |b| |a-b-c|》| |a| - |b| - |c| |