Question

Consider the relation R={(x,2x-1):x belongs to A}. where A=(2, - 1,3).
(i) Write R in roster form
(ii) write range of R

Answer 1

Answer:

R={(2,3)(-1,-3)(3,5)}

Range={-3,3,5}

Step-by-step explanation:

R={(x,2x-1):x belongs to A}

Hence

x=2  ,  2x-1=(2*2)-1=4-1=3          2x-1=3

x=-1  ,  2x-1=(-1*2)-1=-2-1=-3       2x-1=-3

x=3  ,  2x-1=(3*2)-1=6-1=5          2x-1=5

R={(2,3)(-1,-3)(3,5)}

Range={-3,3,5}