Follow the instruction in problem 45 for f(x) = (sin2 x - 3 tan x) / cos x.
Let f(x) = (x3 + 3x - 5) / (x2 + 4).
a. Evaluate f(1.38) and f(4.12).
(b) Construct a table of values for this function corresponding to x = - 4, - 3 tan) / cos x.
To use technology effectively, you need to discover its capabilities, its strengths and its weaknesses. We urge you to practice graphing functions of various types using your own computer package or calculator.