(D) {−1,1,2}
(E) {−1,−2,2}
- If the domain of f is restricted to the open interval then the range of f (x) = etan x is
(A) the set of all reals
(B) the set of positive reals
(C) the set of nonnegative reals
(D) {y | 0 < y 1}
(E) none of these
- Which of the following is a reflection of the graph of y = f (x) in the x-axis?
(A) y = −f (x)
(B) y = f (−x)
(C) y = |f (x)|
(D) y = f (|x|)
(E) y = −f (−x)
- The smallest positive x for which the function is a maximum is
(A)
(B) π
(C)
(D) 3π
(E) 6π
(A) −1
(B)
(C)
(D)
(E) 1
- If f −1(x) is the inverse of f (x) = 2e−x, then f −1(x) =
(A)
