CAT Quant Practice Problems

Question: For real numbers x and y, let

\(f\left( {x,y} \right) = \left\{ \begin{array}{l}{\rm{Positive\; square\; root \;of\; }}\left( {x + y} \right),{\rm{if }}{\left( {x + y} \right)^{0.5}}{\rm{\; is\; real}}\\{\left( {x + y} \right)^2},{\rm{ otherwise}}\end{array} \right.\)

\(g\left( {x,y} \right) = \left\{ \begin{array}{l}{\left( {x + y} \right)^2},{\rm{ if }}{\left( {x + y} \right)^{0.5}}{\rm{\; is\; real}}\\ - \left( {x + y} \right),{\rm{ otherwise}}\end{array} \right.\)

Under which of the following conditions is f(x, y) necessarily greater than g(x, y)?

Both x and y are less than –1
Both x and y are positive
Both x and y are negative
y > x
Show Answer
Please Login to see the answer



Back to Main Page

CAT Quant Online Course


  • 1000+ Practice Problems
  • Detailed Theory of Every Topics
  • Online Live Sessions for Doubt Clearing
  • All Problems with Video Solutions
₹ 2999
CAT Quant Practice Problems
4.7 (94.55%) 11 votes