Mathematics for IGCSE & O level - Vectors (Section 2 - No. 2)
Which of the following is the correct method for finding the magnitude of the vector \(\begin{pmatrix} x \\ y \end{pmatrix}\)?
x + y
x - y
\(\sqrt{x^2 - y^2}\)
\(\sqrt{x^2 + y^2}\)
คำอธิบาย
Magnitude is calculated by \(\sqrt{x^2 + y^2}\)