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Class 12 Relations And Functions · Assertion Reason1 Markstypes_of_functions

Class 12 Maths · Relations And Functions · Assertion Reason #148

Assertion: The identity function \(f:\mathbb R\to\mathbb R\), f(x)=x, is one-one. Reason: A function is onto when every codomain element has a preimage.

✅ Step-by-Step Solution

Final Answer: Option (B): Both A and R are true, but R does not correctly explain A.
  1. Both statements are true, but surjectivity does not explain injectivity.

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