Let f,g:R→R be two functions defined as f(x)=x+x and
g(x)=x−x∀x∈R correct matching of
List I from List II
List-I List-II
a) gof(x) i) 8
b) fog(−2) ii) 12
c) fog(−1) iii) 4
d) fog(−3) iv) 0
a-iv, b-i,c-iii,d-ii
a-iii,b-ii,c-i,d-iv
a-iv,b-iii,c-ii,d-i
a-i,b-ii,c-iv,d-iii
f(x)=2x,x≥00,x<0, g(x)=0,x≥0−2x,x<0
gof(x)=0, fog(x)=0,x≥0−4x,x<0