QUESTION 1 f(xy)=x²-y² Sketch the level curve for fix,y) = 1. For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac). BIS Paragraph ✓ Open Sans,ari... ✓ 10pt P QUESTION 2 Find the limit. Hint use Polar Coordinates. lim (x3)-(9) x²+32 !!! < !!! QUESTION 3 Find all first and second order partial derivatives of the given function. f(xy) = xy-²+y-l For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac). BI U S P Paragraph Open Sans,ari... ✓ 10pt QUESTION 4 Find dy/dx for F(x,y) = 0, where F(xy) x²y³- xy² For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac). !!! !!!