Is the following function continuous at the origin? Justify your answer.

$f(x,y)=\{\begin{array}{ccc}1& if(x,y)=(0,& 0)\\ \frac{si{n}^2(x)y^2}{\sqrt[\phantom{2}]{x^4+y^4}}& if(x,y)(0,& 0)\end{array}$