How do I create a row vector P, that contains the sum of the values in column 2 and the sum of the values in column 5 of matrix B.

2 views (last 30 days)
Given: B=rand(randi([10 20]),randi([5 30]))
Find: Create a row vector P, that contains the sum of the values in column 2 and the sum of the values in column 5 of matrix B.
Issue: I am unfamiliar with the wording, or how to contain the two sums in one variable using code. Variable P must be of size [1 2].
My Solution: I got as far as to state >>P=sum(B(:,2); but I do not know how to get the required parameters.

Accepted Answer

VBBV
VBBV on 19 Feb 2024
B = rand(randi([10,20]),randi([5,30]))
B = 14x8
0.3610 0.2474 0.3160 0.1435 0.1535 0.3404 0.2446 0.2655 0.4167 0.9502 0.6448 0.7184 0.4979 0.9226 0.3517 0.7340 0.3727 0.5187 0.7976 0.0949 0.1334 0.4733 0.0156 0.9237 0.1379 0.4606 0.3640 0.2959 0.1628 0.0785 0.9126 0.5805 0.3026 0.0816 0.7866 0.7748 0.3589 0.4130 0.5204 0.7442 0.1768 0.3753 0.5468 0.7770 0.7853 0.1499 0.1178 0.6284 0.3736 0.8786 0.3791 0.8693 0.1866 0.7627 0.0871 0.4819 0.6952 0.9907 0.6566 0.2390 0.9916 0.5976 0.4159 0.1089 0.2989 0.7671 0.0724 0.0051 0.5487 0.5736 0.0606 0.3279 0.5183 0.3728 0.7747 0.3285 0.4035 0.6180 0.1434 0.6018
P = sum(B(:,[2,5]))
P = 1x2
8.2966 5.1808

More Answers (0)

Products


Release

R2023b

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!