1. The problem statement, all variables and given/known data A curve is defined for x<-2 by the equation y=((x^2)+3)sqr(x+2) a) Show that dy/dx=0 when x=-1 and find the x-coordinate of the other stationary point. b) Find the value of d^2y/dx^2 when x=-1 hence determine whether the turning point is max or min. 2. Relevant equations 3. The attempt at a solution y=((x^2)+3).(x+2)^1/2 Differentiate by product rule : u=x^2 +3 v=(x+2)^1/2 u'=2x v'=1/2((x+2)^1/2) dy/dx= (x^2+3).0.5(x+2)^(-0.5) + (x+2)^0.5 . 2x Where do i go from here>??