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>> clear % clear memory of all previously defined variables
>> whos % find out what's in memory (nothing)
>> x = [1,2,3,4,5]; % define x = [1,2,3,4,5]
>> y = [2.0, 5.0, 7.0]; % define y = [2.0, 5.0, 7.0]
>> whos % again, find out what's in memory
Name Size Bytes Class
x 1x5 40 double array
y 1x3 24 double array
Grand total is 8 elements using 64 bytes