1. If y+ 4x2 = 5 find the equation of the normal line at (1, 1). 2. Find the equation of the normal line to xy + y = 20 at (1, 4). 3. Given: x2y = 4y + 3x2 Find all points where the tangent to the graph is horizontal. 4. If y = sin x + cosy , find 5. If 4x2 - 6y2 = 18 a) Find dy b) Find dx (and the beautiful answer!) 6. a) If f(x) = x+x3+2x -2 find (f-1)' (-2). b) If f(x) = 3x3 + 2x2 + x+ 1 find (f -1)' (35). 7. Use the table to find (f-1)'(18). X 4 12 18 f(x) -3 18 9 f' (x) 18 7 10 8. Find the slope of the line tangent to y = arcsin(6x) at V3 12