The sum of two matrixes

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Question:The sum of two matrixes

Posted: The function 110 Product: Maple

September 23 2022

Dear all,

im having trouble with adding two matrixes when they are only described with a letter asigned to them. I really dont know why it is the case. But it has got the be done with letters only because later on i will need this a lot with vector calculations etc.

Thank you!

A := Matrix(2, 3, {(1, 1) = 2, (1, 2) = -5, (1, 3) = 1, (2, 1) = 0, (2, 2) = 3, (2, 3) = -2})

array( 1 .. 2, 1 .. 3, [( 1, 2 ) = (2), ( 2, 2 ) = (1), ( 2, 3 ) = (3), ( 1, 1 ) = (0), ( 2, 1 ) = (7), ( 1, 3 ) = (-1) ] )

Error, (in matrix) invalid argument A+B

(Matrix(2, 3, {(1, 1) = 2, (1, 2) = -5, (1, 3) = 1, (2, 1) = 0, (2, 2) = 3, (2, 3) = -2}))+(Matrix(2, 3, {(1, 1) = 0, (1, 2) = 2, (1, 3) = -1, (2, 1) = 7, (2, 2) = 1, (2, 3) = 3}))