Check sibling questions
Chapter 1 Class 12 Relation and Functions
Serial order wise

Example 21 - Are f and g both onto, if gof is onto? - Composite funcions and one-one onto

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Example 21 Are f and g both necessarily onto, if gof is onto? Let f : {1, 2, 3, 4} {1, 2, 3, 4} f is not onto g: {1, 2, 3, 4} {1, 2, 3} g is onto gof is onto. But g & f are not necessarily onto

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Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 12 years. He provides courses for Maths and Science at Teachoo.