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A binary operation * is defined on a set of real numbers by x*y =...

Mathematics
JAMB 2024

A binary operation * is defined on a set of real numbers by x*y = x\(^y\) for all values of x and y, if x * 2 = x, find the possible values of x.

  • A. 0, 2
  • B. 1, 2
  • C. 0, 1
  • D. 2, 2
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Correct Answer: Option C
Explanation

Given the operation defined by \( x * y = x^y \),

\[x * 2 = x \implies x^2 = x\]

Rearranging gives: \[x^2 - x = 0 \implies x(x - 1) = 0\]

Thus,  the possible values of \( x \) are: \[\boxed{0 \text{ and } 1}\]

There is an explanation video available below.


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Explanation Video

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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts