How do I find the dot product of 2 matrices without the same number of elements?

3 次查看（过去 30 天）
Christian Jaramillo
Christian Jaramillo 2018-10-24
编辑： Matt J 2018-10-25
I have the following vectors that I need to find the dot product for using the dot function. here is what I have so far;
A = [1 2 3]
B = [12 20 15 7]
dot(A, B)
  10 个评论
显示 8更早的评论
Image Analyst
Image Analyst 2018-10-24
I don't think 1 and 2 can be done. 3 can be done because for each food item there is a count and a price so you just do sum(count.*price).

请先登录，再进行评论。

请先登录，再回答此问题。

回答（1 个）

Haritha
Haritha 2018-10-25
编辑：Matt J 2018-10-25
Hi,
To create the equal size of a vector you have to do padding.
Example:
A = [1 2 3 0];
B = [12 20 15 7];
dot(A, B)
ans =
97

类别

在 Help Center 和 File Exchange 中查找有关 Logical 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by