Classify each function as a power function, root function,  polynomial (state its degree), rational function, algebraic function,  trigonometric function, exponential function, or logarithmic function.

(a) y = π^x

(b) y = x^π

(c) y = x²(2 – x³)

(d) y = tan t – cos t

(e) y = s/1 + s

(f) y = √x³ – 1/ 1 + 3√x