How I can make a function projection (A,B)?

For example i would to project vector A to B.

[Jan]

To me this sound like a homework question. Then please post, what you have tried so far.

Answer 1

[Jan]

The projection of a vector A onto a vector B has the same direction as the vector B, but a different length. When both are parallel, the length of A is not changed. When A and B are orthogonal, the resultung vector vanishes. You need the dot product to calculate this. The details are explained e.g. at Wiki: vector projection.

Please try this and post what you have done so far. If you have a specific question, you will get assistance here.

[Sara Jam]

I made the function

P= projecton(A,B);
P= (dot(A,B)/norm(B)^2)*B
end

Is it correct ?

[Jan]

A function must start with the keyword "function":

function P = projection(A, B)

Then I'd insert a semicolon after the calculation to suppress the output to the command window. The calculations are correct.