If x is a vector,and center it on the origin,but what dose the formula (x.1=0) mean?I am puzzled about why there is a point symbol behind vector x,and what does 1 mean? I really appreciate your help! The image below is the original text
Follow Math Help Forum on Facebook and Google+
Hello, Common notation for the scalar product.
hi,can you speak in detail? My english is very poor,and can you give me a example? thank you very much
You mean the point symbol means scalar product?but 1 means a vector that each element equals to 1?
Originally Posted by Moo Hello, Common notation for the scalar product. You mean the point symbol means scalar product?but 1 means a vector that each element equals to 1?
Originally Posted by ChinaPanda You mean the point symbol means scalar product?but 1 means a vector that each element equals to 1? Yes, 1 stands for $\displaystyle \begin{pmatrix} 1\\1\\ \vdots \\ 1\end{pmatrix}$ This scalar product will actually give the sum of x's components. duibuqi, wo bu hui shuo zhongwen shuxue
Originally Posted by Moo Yes, 1 stands for $\displaystyle \begin{pmatrix} 1\\1\\ \vdots \\ 1\end{pmatrix}$ This scalar product will actually give the sum of x's components. duibuqi, wo bu hui shuo zhongwen shuxue wow ,you're great! scalar product in chinese is dian cheng,dian (点)means a point,cheng(乘)means product
View Tag Cloud