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Class 11

Functions and Their Graphs — Quiz

Five questions on functions, their domains and ranges, and their algebra. Pick one answer for each.

5 questions, one mark each. 3 to pass. Suggested time: 10 minutes. Your answers are not recorded.

  1. Which relation on {1,2,3}\{1, 2, 3\} is a function?
  2. Find [−3.4][-3.4], where [x][x] is the greatest integer function.
  3. Find the domain of f(x)=1x2−16\displaystyle f(x) = \dfrac{1}{x^2 - 16}.
  4. Find the range of f(x)=∣x−1∣+2f(x) = \lvert x - 1 \rvert + 2.
  5. f(x)=2x+1f(x) = 2x + 1 and g(x)=x2g(x) = x^2. Find (fg)(x)(fg)(x).
Unanswered questions are marked wrong.

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