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If is defined by , show that is one - one and onto.
If $f: \mathbb{R} \to \mathbb{R}$ is defined by $f(x) = \frac{2x - 7}{4}$, show that $f(x)$ is one - one and onto.
Given: $f(x) = \frac{2x - 7}{4}$
To show: $f(x)$ is one - one and onto
Answer
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From ISC 2024 Mathematics Paper 1, question 2(ii).