For the function name and arguments, use W = DotPro(V,U) . The input arguments V

Question

For the function name and arguments, use W = DotPro(V,U). The input arguments V and U are the vectors to be multiplied. The output argument W is the result (a scalar).

(a) Use DotPro to determine the cross product (the book says cross product, but I think it means dot product judging by the question) of the vectors v = i + 2j + 3k and u = 3i + 2j + k.

(b) Use DotPro to determine the cross product (the book says cross product, but I think it means dot product judging by the question) of the vectors v = -2i + j - 3k and u = i + j + k.

Explanation / Answer

function DotPro = DotPro(v,u)

DotPro = 0;

for i=1:3

DotPro = DotPro+v(i)*u(i);

end

a) V = [1 2 3];

   U = [3 2 1];

DotPro(V,U)

b)

V = [-2 1 -3];

   U = [1 1 1];

DotPro(V,U)

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