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Which of the following does not represent a function?

Which of the following does not represent a function?-example-1

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A function should produce one output for one given input.
Therefore a function should pass the vertical line test.

From the figure,
a,b,c pass the vertical line test;
d fails the vertical line test.

Answer: Case d does not represent a function.

Which of the following does not represent a function?-example-1
User Mangesh Daundkar
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