## Algebra and Trigonometry 10th Edition

Equation : $y=x^4-x^2+3$ Put -y instead of y, $-y=x^4-x^2+3$ (not symmetric wrt. x axis) Put -x instead of x, $y=(-x)^4-(-x)^2+3=x^4-x^2+3$ same as $y=x^4-x^2+3$ (symmetric wrt. y axis) Put -y instead of y and -x instead of x, $-y=(-x)^4-(-x)^2+3=x^4-x^2+3$ (not symmetric wrt. origin)