FunctionHard
Question
If f : Q → Q, f(x)= 2x and g : Q → Q, g(x) = x + 2, then (fog)-1(20) equals-
Options
A.10
B.12
C.8
D.6
More Function Questions
If f(x) = sgn , where [.] is the greatest integer function, then which of the following statement is/are true ?...Let f : R → R be a function defined by f(x) = Min {x + 1, |x| + 1}. Then which of the following is true?...Let f : (4, 6) → (6,8) be a function defined by f(x) = x + . (where [.] denotes the greatest integer function) , t...Which one of the following is not an odd function -...The minimum value of f(x) = | 3 - x | + | 2 + x | + | 5 - x | is -...