find the interval in which the function given by f(x)=sin3x,x-(0,22/7) is a) increasing b)decreasing....
Answers
Answered by
1
f(x)= sinx3xf'(x)= 3 cos 3xLet f'(x)=03 cos 3x =0cos 3x=0cos 3x = cos π/23x=π/2x= π/6Increasing:f'(x)>0So x>π/6So f(x) increases in (π6,∞)Decreasing:f'(x)<0So x< π/6So f(x) decreases in (−∞,π6)
Similar questions