Question 4 - Examples - Chapter 1 Class 12 Relation and Functions

Last updated at July 21, 2026 by

Example 20 - If gof is one-one. Are f and g both one-one - Composite funcions and one-one onto

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Question 4 Consider functions f and g such that composite gof is defined and is one-one. Are f and g both necessarily one-one. Here, we take examples and function f, g And draw their set using arrow diagram Here, f is one-one But g is not one And finding gof using arrow diagram, we see that gof is one-one But g & f are not necessarily one-one

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