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Which of the Following Graphs Represents a One-one Function?

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प्रश्न

Which of the following graphs represents a one-one function?

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उत्तर

In the graph of (b), different elements on the x-axis have different images on the y-axis. But in (a), the graph cuts the x-axis at 3 points, which means that 3 points on the x-axis have the same image as 0 and hence, it is not one-one.
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अध्याय 2: Functions - Exercise 2.5 [पृष्ठ ७३]

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आर.डी. शर्मा Mathematics Volume 1 and 2 [English] Class 12
अध्याय 2 Functions
Exercise 2.5 | Q 2 | पृष्ठ ७३

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