(a) f(x) = e^x + e^(x)

(b) f(x) = arctan(x1/x+1)

Find:

a) domain

b) x and y intercepts

c) If the function is even, odd, or periodic function

d) Horizontal and vertical asymptotes

e) intervals of increase/decrease

f) local max/min values

g) intervals of concavity and points of inflection

h) sketch the curve