posted by Anonymous on .
(a) By graphing the function
f(x) = (cos 2x − cos x)/x2
and zooming in toward the point where the graph crosses the y-axis, estimate the value of
x → 0
(b) Check your answer in part (a) by evaluating
for values of x that approach 0. (Round your answers to six decimal places.)
so, you're not gonna even do the evaluations of f(x)?
If you do that, you can verify that f(x) --> -3/2
To see the graph, visit on of my most useful sites:
PS This page also has a box near the bottom which evaluates a function for different values of x, separated by spaces :-)