1.

Out of the following which is not function?

Answer»

`{(x,y): x, y in R "" x^(2)= y}`
`{(x,y ): x, y in R " " y^(2)=x}`
`{(x,y): x, y in R " " x= y^(3)}`
`{(x,y) : x, y in R " " y= x^(3)}`

Answer :B


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