Need the answers with explanation.

f ( x ) =- x 2 x - 1 f(x) = esin(x) 31. For what value(s) of x does 32. For what value(s) of x does the function have a slope of 0 the function have a slope of 0 on [0,] Hint: The solution involves tan x f(x) = cos(x) f(x) = sin(x) for what value(s) of x does for what value(s) of x does 33. the function have a negitive slope 34. the function have a positive slope on 0,27t on 0,27t