I would like some assistance with the following calculus questions

QUESTION 3 (a) Determine lim x- - 1 (3 marks) xx- -3x +2 x' -3x -10 (b) Determine the point of discontinuity of f(x) =- (8 marks) x' - 4x-+x+6QUESTION 4 (a) Given f(x) 2 gr} 2x2 8 i. Find the interval on which f is increasing and the interval on which fis decreasing (3 marks) ii. Find the interval on which the graph of f is concave upwards and the interval on which f is concave downwards (3 marks) iii. Find the coordinates of the relative extrema (3 marks) iv. Find the coordinates of the inection point (3 marks) v. Sketch a graph of x) (2 marks) (b) Differentiate the following function with re5pect to x. Do not simplify your answers. 3.r i. x) = 32 (3 marks) x+l ii. x) =(x+2)3 lnx