Calculus, Linear Algebra, Machine Learning, Mathematics, Math For Machine Learning.
vector we can use the Pythagorean theorem ( x²+ y²= z²). |a|=( x²+ y²)½= (4² + 3²)½= 5 The magnitude of a vector is a scalar value — a number representing the length of the vector independent of the direction. There are a lot of examples were the magnitudes of vectors are important to us: