Let () = 4^3 + 7^2 6 + 5

(a) Locate all stationary points. (2 marks) (NB: provide both the x and y coordinates)

(b) Choose one of the stationary point(s) and determine its nature using the second derivative test. (1 mark)

(c) Find the equation of the tangent line at the point where the curve passes through the y-intercept.