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Linear algebra linear transformations

I don’t get how they got that answer for this question:
508E1B19-3B58-4854-998A-2AD11DA0270B.jpeg
(edited 12 months ago)
Reply 1
If x is R^3 and y is R^5, then in the transformation
y = Ax
A must have 3 columns and 5 rows to be dimensionally consistent.
(edited 12 months ago)
Reply 2
Original post by mqb2766
If x is R^3 and y is R^5, then in the transformation
y = Ax
A must have 3 columns and 5 rows to be dimensionally consistent.


Ohhh okay I get it!
thank you

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