Question

ok need a little bit help:
the area bounded by the curve \[\large f(x)=\cos^{-1}(cosx),0 \le x \le 2 \pi\]
with the tangent to the curve \[\large f(x)=|cosx|~~at~~x=\pi ~~is?\]

Answer 1

isnt f(x) just equal to x?

Answer 2

|h(x)|' = h'(x) * h(x)/|h(x)|

Answer 3

http://www.wolframalpha.com/input/?i=ArcCos%5BCos%5Bx%5D%5D

Answer 4

Not quite, some difficulty arises from the domain of the inverse cosine.