If the function g(x) is defined by g(x)=x200200+x199199+x198198+……..+x22+x+5, then g′(0)=………….
1
200
100
5
g’(0)= 1 as every term of g'(x) has x in each term except the last term which is 1.
If f(x) and g(x) are real function defined by f(x)={x ,xisrational0 ,xisirrational and g(x)={0 ,xisrationalx ,xisirrational, then (f−g)(x) is