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The product of a vector and a matrix

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Hancheng Zhu 2023-12-8

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编辑： Dyuman Joshi 2023-12-8

采纳的回答： Dyuman Joshi

I have a vector A =

and a matrix X =

, where

is a M-dimensional row vector. Does matlab have an operator that directly give me the matrix

? (where each row vector in the above matrix X is multiplied by the corresponding part in vector A)

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采纳的回答

Dyuman Joshi 2023-12-8

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编辑：Dyuman Joshi 2023-12-8

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If I understand your question correctly, you should get the desired output using array multiplication -

N=5;
A = (1:N).'
A = 5×1
     1
     2
     3
     4
     5
X = magic(N)
X = 5×5
    17    24     1     8    15
    23     5     7    14    16
     4     6    13    20    22
    10    12    19    21     3
    11    18    25     2     9
Z = A.*X
Z = 5×5
    17    24     1     8    15
    46    10    14    28    32
    12    18    39    60    66
    40    48    76    84    12
    55    90   125    10    45

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MATLAB Language Fundamentals Matrices and Arrays

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