1) The function f of a numerical variable x is defined from R to R by f(x) = = 2x + 3 + ln (x+1) and Cf is its representative curve in the orthonormal reference system (o, i, j). a) Determine the domain of definition (DF) of the function f b) Study the limits at the bounds of the domain c) Show that the line y = 2x + 3 is an oblique asymptote to the curve (Cf) off and state the other asymptotes. d) Study the variation of f and draw its variation table. e) Show that the point I(0, 3) is the centre of symmetry. F) Sketch the curve of f.​