MATLAB - Vector Dot Product

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Dot product of two vectors a = (a1, a2, …, an) and b = (b1, b2, …, bn) is given by:

a.b = ∑(ai.bi)

Dot product of two vectors a and b is calculated using the dot function.

dot(a, b);

Example

Create a script file with the following code:

v1 = [2 3 4];
v2 = [1 2 3];
dp = dot(v1, v2);
disp('Dot Product:'); disp(dp);

When you run the file, it displays the following result:

Dot Product:
    20


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