This document discusses using the concept of joint variant to write an equation relating variables x, y, and z as y=ax+bz when two vectors p and q are parallel. It provides an example problem to find the possible value of x when given vectors p and q are parallel.

1. Form 5 (variation vs. vector)Use the concept of joint variant.y variant directly as x and z is written by . In the form of equation its written as .In the vector, this method is used when two vector are given and this two vector are parallel.Let and find the possible value of x when p and q are parallel.Solution:Concept of variant