1. ## find the symmetrics

y=4x^2/x^2+1

sym with the y asis
sym with the x axis

reallly need ur guys' help ...thanks

2. Originally Posted by alessandromangione
y=4x^2/x^2+1

sym with the y asis
sym with the x axis

reallly need ur guys' help ...thanks
A function is symmetric with respect to the y axis if replacing y with -y does not change the formula. A function is symmetric with respect to the x axis if replacing x with -x does not change the formula. For example, $\displaystyle (-x)^2= x^$ so $\displaystyle y= x^2$ is symmetric with respect to the x axis but $\displaystyle -y= x^2$ is the same as $\displaystyle y= -x^2$ which is not the same. It is not symmetric with respect to the y axis.