a向量（x,y) b向量(a,b)
a*b=ax+by
猜你喜欢
- 1they+brought+some+food+and+什么for+lunch英语填空
- 2描写情景的儿童诗,请给我抄下来(2首五年级)快点,
- 3动脉血的二氧化碳分压升高、氧气浓度降低及氢离子浓度升高对呼吸远动的影响
- 4岁月悠悠、波光明灭、泡沫聚散的近义词是?
- 5一篇英语阅读答案解析
- 6函数根号下log以x-1为底(1+3x)的定义域是
- 7人体各部位的名称,除本义外,在日常生活中常有另一种含义
- 8It is sure to be considered to result from the whole year‘s hard work of mine
- 920秒等于多少小时
- 10_____alarm clock and some books are on the desk in my room