(Solved): The figure above shows the curve C with equation: y=2x3+3x211x6 The curve crosses the -axis ...
The figure above shows the curve C with equation: y=2x3+3x2−11x−6 The curve crosses the χ-axis at the points P,Q and R(2,0). The tangent to C at R is the straight line L1. The normal to C at P is the straight line L2. The straight lines L1 and L2 meet at the point S. 3a) Find an equation of L1 3b) Show that ∠PSR=90∘.