If then write the value of

Write the range of the function f(x) = e^{x – [x]}, X ∈R.

LetThen write the value of α satisfying f(x)) = x for all
x ≠ - 1.

Write the domain and range of the function

If f(x) = 4x – x², x ∈ R, then write the value of f(a + 1) – f(a – 1).