Which one of the following is not a function ? (a) {(x,y):x,yϵR,x2=y}

1.	Which one of the following is not a function ? (a) {(x,y):x,yϵR,x2=y} (b) {(x,y):x,yϵR,y2=x} (c) {(x,y):x,yϵR,x=y3} (d) {(x,y):x,yϵR,y=x3}
Answer» Which one of the following is not a function ? (a) ${(x, y) : x, y ϵ R, x^{2} = y}$ (b) ${(x, y) : x, y ϵ R, y^{2} = x}$ (c) ${(x, y) : x, y ϵ R, x = y^{3}}$ (d) ${(x, y) : x, y ϵ R, y = x^{3}}$

Which one of the following is not a function ? (a) {(x,y):x,yϵR,x2=y} (b) {(x,y):x,yϵR,y2=x} (c) {(x,y):x,yϵR,x=y3} (d) {(x,y):x,yϵR,y=x3}

Answer»

Which one of the following is not a function ?

(a) ${(x, y) : x, y ϵ R, x^{2} = y}$
(b) ${(x, y) : x, y ϵ R, y^{2} = x}$
(c) ${(x, y) : x, y ϵ R, x = y^{3}}$
(d) ${(x, y) : x, y ϵ R, y = x^{3}}$