Maximizing Efficiency: Utilizing a Pressure Cooker for Cooking

[conv]

Homework Statement

Anyone who understands this?

Relevant Equations

I think it has something to do with multiplying matrix A and B? But I can't figure out.

 

[etotheipi]

If matrix $P$ has dimensions $w \times x$ and matrix $Q$ has dimensions $y \times z$, what is the condition for the product $PQ$ to be defined? Think in terms of rows and columns...

 

[conv]

The new matrix will be 2x3..

But I still can't understand it ://

 

[etotheipi]

What is the relationship between the number of columns in the matrix on the left and the number of rows in the matrix on the right, when they’re multiplied together?

 

[PeroK]

The new matrix will be 2x3..

But I still can't understand it ://

Why don't you try to calculate the matrix $C$ in each case? See which ones you can do and which ones you can't.

 

[conv]

I can't find out how to do that in my book. Have tried for a long time now.
What does the A^T and B^T represent?

 

[PeroK]

I can't find out how to do that in my book. Have tried for a long time now.
What does the A^T and B^T represent?

That means the transpose:

https://en.wikipedia.org/wiki/Transpose

 

[WWGD]

If the general entry is described by $A=(a_{ij} )$, where i is the ith column and j is the jth row, then $A^{T}:=(a_{ji})$ , meaning a flip of rows and columns in the original matrix ( The one with Keanu, I think; ) ).