[線代] prove linear
Let V and W be vector spaces over a field F.Let T:V → W be a
function statisfying T(x+y)=T(x)+T(y).If F is the set of rational numbers,
then prove or disprove T is a linear transformation from V to W.
我記得三個作者的那本書上有類似的題目
答案是false
可是不知道該怎麼做
請高手指點
謝謝
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