Identify which of the twelve basic functions listed below fit the description given.
y = x, y = x2, y = x3, y = |x|, y = 1/x, y = e^x, y = sqr(x), y = ln x, y = sin x, y = cos x, y = int(x), y = 1/1+e^- x
the three functions that are bounded above.
a. y = sin x, y = cos x, y = ln x
b. y = ln x, y = sqr (x), y = 1/1+e^- x
c. y = sin x, y = cos x, y = int (x) {this answer was wrong! }
d. y = sin x, y = cos x, y = 1/1+e^-x