Evaluate lim(x,y)(0,0) 5x2sin(y)5x2+5y2\displaystyle \lim_{{{\left({x},{y}\right)}\rightarrow{\left({0},{0}\right)}}}\ {\frac{{{5}{x}^{{2}}{\sin{{\left({y}\right)}}}}}{{{5}{x}^{{2}}+{5}{y}^{{2}}}}} =

Use DNE for does not exist, oo for infinity or -oo for negative infinity.