First slide
Functions (XII)
Question

Let f,g:RR be two functions defined as f(x)=x+x and

g(x)=xxxR 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

Moderate
Solution

f(x)=2x,x00,x<0,g(x)=0,x02x,x<0

gof(x)=0,fog(x)=0,x04x,x<0

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