If the binary operation \( \ast \) is defined by \( m \ast n = mn + m + n \) for any real number m and n, find the identity of the elements under this opera...

Assessment: JAMB UTME - Mathematics - 1992 Subject: General Mathematics

Question 1 Report

If the binary operation \( \ast \) is defined by \( m \ast n = mn + m + n \) for any real number m and n, find the identity of the elements under this operation

Answer Details
m  ∗  n = mn + m + n
m  ∗  e = me + m + e, e  ∗  m = e
∴ me + m + e, m(e + 1)e - e = 0
e + 1 = 0
∴ e = -1

Download The App On Google Playstore

Everything you need to excel in your exams

Green Bridge CBT Mobile App
Personalized AI Learning Chat Assistant
200,000+ Exam Questions Across IGCSE, JAMB, WAEC & NECO
Over 3,900 Lesson Notes
Offline Support - Learn Anytime, Anywhere
Green Bridge Timetable
Literature Summaries & Potential Questions
Track Your Performance & Progress
In-depth Explanations for Comprehensive Learning