Mathematics: Calculation on Arithmetic Progression (A.P) dealing with 3rd & 9th term(SS2)
Welcome to Model Physics Mathematics Lessons. In this tutorial, i solve a challenging Arithmetic Progression (A.P.) problem involving algebraic expressions. Question: If the 3rd term of an Arithmetic Progression is 4m - 2n and the 9th term is 2m - 8n, find the common difference in terms of m and n.
In this lesson, you will learn:
-The formula for the nth term of an A.P.
-How to relate two terms of an A.P.
-Step-by-step algebraic manipulation
-How to find the common difference when variables are involved
-Exam techniques useful for WAEC, NECO, JAMB, GCSE, and other mathematics examinations.
This video is ideal for students preparing for mathematics exams and anyone looking to strengthen their understanding of Arithmetic Progression.
Answer: Common difference (d) = -(m + 3n)/3
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