how do u make a new value that is the sum of two columns

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Sophia Chen
Sophia Chen 2021-1-22
回答： Jan 2021-1-22
So I have a value r which is a variable with two columns of value represent the returns of two stocks.
now I wanna make a new variable that is 0.6 of first stock and 0.4 of second stock
how should I do that

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回答（2 个）

Paul Hoffrichter
Paul Hoffrichter 2021-1-22
A = [1 2 ;3 4; 5 6 ;7 8; 9 10; 11 12; 13 14; 15 16]
A =
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
K>> w = .6*A(:,1) + .4*A(:,2);
w =
1.4000
3.4000
5.4000
7.4000
9.4000
11.4000
13.4000
15.4000
Jan
Jan 2021-1-22
A = [1 2 ;3 4; 5 6 ;7 8; 9 10; 11 12; 13 14; 15 16];
B = A * [0.6; 0.4]

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