Exercise 5.1.8

Answers

Proof sketch: a) Let $v = x$ , then $(x, x) = 0$ , $x = 0$ .

b) $({x, v}_{k} = 0), \forall k$ , then $(x, v) = 0$ , form conclusion in a), $x = 0$ .

c) $({x - y, v}_{k}), \forall k$ , form b) $x - y = 0$ , then $x = y$ .

huangjing

2018-11-29 00:00