1. Chapter 1 Class 12 Relation and Functions
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Question 2 - Examples - Chapter 1 Class 12 Relation and Functions

Last updated at Dec. 16, 2024 by Teachoo

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Question 2 Show that if f : A → B and g : B → C are one-one, then gof : A → C is also one-one. Checking gof one-one We need to prove that If gof (x1) = gof (x2), then x1 = x2 Suppose gof (x1) = gof (x2) g (f (x1)) = g(f (x2)) Given g is one-one So, f (x1) = f (x2), And f is also one-one x1 = x2 Hence, gof is one-one.
  1. Chapter 1 Class 12 Relation and Functions
  2. Serial order wise

    3. Examples

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Chapter 1 Class 12 Relation and Functions
Serial order wise

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Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science and Computer Science at Teachoo