The function `|x^2 - 3x+2| + cos |x|` is not differentiableat `x=`

The function |x^(2)-3x+2|+cos|x| is not differentiableat x=

The function f(x)=(x^(2)-1)|x^(2)-3x+1|+cos(|x|) is not differentiable at :

The function f(x)=cos|x|+(x^(2)-1)|x^(2)-3x+2| is not differentiable at :

Which of the following is true about point of extremum x=a of function y=f(x)? At x=a, function y=f(x) may be discontinuous.At x=a, function y=f(x) may be continuous but non-differentiable.At x=a, function y=f(x) may have point of inflection.none of these

The range of the function f(x)=2|sin x|-3|cos x| is

The range of the function f(x)=3|sin x|-2|cos x| is :

The range of the function f(x)=3|sin x|-2|cos x| is :