Error when trying to modify a code (vectors)

sgh

Answer 1

[Image Analyst]

Try this:

disp(' ')
disp('This program computes the vectors v that are:');
disp('    - ortogonal to w')
disp('    - have length 1')
disp('    - have zero as the first component')
disp(' ')
str = input('Please enter a vector w=[w1 w2 w3]: ', 's'); 
w = sscanf(str, '%f %f %f')
disp(' ');  
v1=1*w; 
v2=2*w; 
v3=3*w; 
v4=4*w; 

Answer 2

[Jenny Andersen]

Thanx, but does this mean I can just insert the expressions for v ( v1 = +/- w2/((w3^2)+(w2^2)) and v2 = +/- w3/((w3^2)+(w2^2)) )?

Sorry I am very new at this

Answer 3

[Steven Lord]

You can directly use the elements of a vector through indexing. You don't need to extract them into separate variables.

w = [1 4 9] % Sample
v = w(3) - w(2).^2 + w(1) % 9 - 4*4 + 1 = -6