Examples of using Matrix vector in English and their translations into Thai
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Colloquial
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Ecclesiastic
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Ecclesiastic
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Computer
Some matrix vector product.
Now, can we take this matrix vector product?
Matrix Vector multiplication.
This is the matrix vector multiplication.
This comes out of our definition of matrix vector products.
So each of these matrix vector products are well-defined.
All linear transformations can be a matrix vector product.
That was from our definition of matrix vector multiplication, this is just a bunch of column vectors a1 through a5, I drew it up here.
It can be represented by a matrix vector product.
Remember, even though I have a matrix vector product right here, when I multiply a matrix times this vector, it will result in another vector. .
You could view this as a matrix vector product.
I think you're pretty familiar with the idea of matrix vector products and what I want to do in this video is show you that taking a product of a vector with a matrix is equivalent to a transformation.
I'm just doing the definition of matrix vector multiplication.
This, by the definition of matrix vector multiplication is equal to x1 times v1.
So that's going to be the first entry in this matrix vector product.
But it's very easy to prove just using the definition of matrix vector multiplication, that matrix vector multiplication does display the distributive property.
This just comes straight out of our definition of matrix vector products.
Now, if T has to be onto, that means that Ax, this matrix vector product, has to be equal to any member of our co-domain can be reached by multiplying our matrix A by some member of our domain.
And we just figured out what the matrix vector product is.
We have seen in a previous video that any linear transformation can be represented as a matrix vector product.
This was by definition of a matrix vector multiplication.
And any linear transformation you could actually represent as a matrix vector product.
So when we distribute the matrix vector product, you get.
Because now we know that T-inverse can be represented as a matrix vector product.
And if the transformation is equal to some matrix times some vector, and we know that any linear transformation can be written as a matrix vector product, then the kernel of T is the same thing as the null space of A.
Now, I just told you that I can represent this transformation as a matrix vector product.
It's a very handy way of thinking about matrix vector products.
But anyway, back to our attempt to represent this transformation as a matrix vector product.
So this number right here has to be the same as that number in order for the matrix vector multiplication to be valid.
We have more columns here than entries here, so we have never defined a matrix vector product like this.