A) \[R=\{(x,y):{{x}^{2}}+{{y}^{2}}\le 9\}\]on R
B) \[A=\{1,2,3\},B=\{1,2,3,4,5\}\] and \[r=\{(x,\text{ }y):5x+2y\]is a prime number} on A
C) \[A=\{1,2,3,4\},B=\{1,2,3,4,5,6,7\}\]and\[R\{(x,y)|y={{x}^{2}}-3x+3\}\]on A
D) None of the above
Correct Answer: D
Solution :
The relation R in contains\[(1,-1)\]and (1,1). So, is not a function. The relation R in contains (1,1) and (1,3). So, is not a function. Again, the relation\[R\]in contains (1,1) and (1,2). So, is not a function.
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