Magnitude of a Vector

The magnitude of a vector is its length, always a non-negative number. For a vector $x\mathbf{i}+y\mathbf{j}$ in the Cartesian plane it is $\sqrt{x^{2}+y^{2}}$, found using Pythagoras' theorem.

It is written with modulus bars, as $|\vec{AB}|$.

You meet Magnitude of a Vector in the Vectors chapter of SPM Additional Mathematics. Knowing the term precisely matters in the exam: questions often hinge on reading a keyword correctly, and because SPM marking is analytic, using the right definition in your working helps secure method marks.

Our teachers make sure a student can not only recite what Magnitude of a Vector means but use it fluently in a full solution.

Because the SPM Add Math paper is bilingual (BM/EN), it helps to know this term in each language: Magnitude of a Vector (EN) · Magnitud Vektor (BM) · 向量的模 (中文)

Other key terms from the Vectors chapter you may want to check:

• Scalar
• Vector
• Unit Vector
• Resultant Vector
• Parallel Vectors
• Position Vector