[ATTACH=full]3449[/ATTACH] [ATTACH=full]3450[/ATTACH] Question 38 Let y = -y -y = 1/(x^2 + 1) y = -1/(x^2 + 1) Not symmetric with respect to the x-axis. Let x = -x y = 1/[(-x)^2 + 1)] y = 1/(x^2 + 1) Symmetric with respect to the y-axis. Let y = -y and x = -x -y = 1/[(-x)^2 + 1)] -y = 1/(x^2 + 1) y = -1/(x^2 + 1) Not symmetric with respect to the origin.