皮皮学，免费搜题
登录
搜题
【简答题】
判定全体正实数R + ，对下列指定的运算是否构成R上的线性空间．加法和数量乘法定义为 其中α，β∈R + ，k∈R．
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】I (mean) to join you in the morning exercise this morning, but I overslept.
【简答题】选词填空 home packing staff assembly supply operating tea meets check development
【简答题】I to join you in the morning
exercise this morning, but I overslept.
【简答题】I’d love to join you in the camping, but I ____ (允诺) to go cycling with John yesterday.
【简答题】Fill in each blank with “hurt”, “mean”, “miss” or “plan” in the word’s proper form. I to
join you in the morning exercise this morning, but I overslept.