Question
Mathematics Question on Relations and functions
Let f(x) = cosx - x + 1, x ∈ [0,π], then
A
f(x) is increasing in (0,π)
B
f (x) is decreasing in (0, π)
C
f(x) is increasing in (0, π/2)and decreasing in (π / 2, π)
D
f(x) is decreasing in (0, π/2) and increasing in (π / 2, π)
Answer
f (x) is decreasing in (0, π)
Explanation
Solution
The Correct answer is option is (B) : f (x) is decreasing in (0, π)