Sketch:

lim f(x) = 818 -4 Incr ++o+ -4 Concave up + + + +0 - -0+++++0= o ++++ -4 -2 80 lim f(x) = 2, f(0) = 1, f(2)=0=f(-2) and 8118 0 0 + + + +0. Incr 210 Concave down Decr 4 4 80 4 8 Decr Concave up X Sign of y X Sign of dy/dx Conclusion for y X Sign of d'y/dx Conclusion for y