CBSE Class 12 Sample Paper for 2021 Boards

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Maths Class 12
Solutions of Sample Papers and Past Year Papers - for Class 12 Boards

Question 3 (Choice 1) - CBSE Class 12 Sample Paper for 2021 Boards - Solutions of Sample Papers and Past Year Papers - for Class 12 Boards

Last updated at August 14, 2026 by

A relation R in the set of real numbers R defined as 𝑅 = {(𝑎, 𝑏): √𝑎 = 𝑏} is a function or not. Justify

A relation R in the set of real numbers R defined as R = {(a, b): root

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Question 3 (Choice 1) A relation R in the set of real numbers R defined as 𝑅 = {(𝑎, 𝑏): √𝑎 = 𝑏} is a function or not. Justify Given 𝑅 = {(𝑎, 𝑏): √𝑎 = 𝑏} Here, R is defined in set of Real Numbers So, a ∈ R and b ∈ R But, √𝑎 = 𝑏 is not defined for negative values of a So, R is not a function

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