I have a matrix a=[1,2,3,4..........,20], Now I want to multiply every other element in a with -1 to get a=[1,-2,3,-4................-20].
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I have a matrix a=[1,2,3,4..........,20] Now I want to multiply every other element in 'a' with -1 to get a=[1,-2,3,-4................-20]. please help me with this......!!
Answers (1)
Azzi Abdelmalek
on 9 Nov 2013
Edited: Azzi Abdelmalek
on 9 Nov 2013
a=1:20
a(2:2:end)=- a(2:2:end)
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on 9 Nov 2013
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