M markosheehan May 2016 380 3 england Sep 30, 2019 #1 can someone help me with the following. I think it does not as f(.5) can be subbed into both parts of the function which makes no sense. (iii) Does the following represent a function from R to R? f(x) = x^2 , x ≤ 1, x + 2, x > 0. justify your answer

can someone help me with the following. I think it does not as f(.5) can be subbed into both parts of the function which makes no sense. (iii) Does the following represent a function from R to R? f(x) = x^2 , x ≤ 1, x + 2, x > 0. justify your answer

P Plato MHF Helper Aug 2006 22,475 8,643 Sep 30, 2019 #2 markosheehan said: can someone help me with the following. I think it does not as f(.5) can be subbed into both parts of the function which makes no sense. (iii) Does the following represent a function from R to R? f(x) = x^2 , x ≤ 1, x + 2, x > 0. justify your answer Click to expand... As you say $(0.5,0.25)~\&~(0.5,2.5)$ are both in the relation. But a function cannot contain two pairs with the same first term. Reactions: 1 person

markosheehan said: can someone help me with the following. I think it does not as f(.5) can be subbed into both parts of the function which makes no sense. (iii) Does the following represent a function from R to R? f(x) = x^2 , x ≤ 1, x + 2, x > 0. justify your answer Click to expand... As you say $(0.5,0.25)~\&~(0.5,2.5)$ are both in the relation. But a function cannot contain two pairs with the same first term.