1. `y=(-2,1),(-1,3),(2,1),(3,2)` Example-1
1. `y=(-2,1),(-1,3),(2,1),(3,2)`, find Range of a function
Solution: domain`={-2,-1,2,3}`
range`={1,3,2}`
2. `y=(1,10),(2,10),(3,10)`, find Range of a function
Solution: domain`={1,2,3}`
range`={10}`
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