xy x2 + y? ) if (2, y) # (0,0) arctan Let f(x, y) = if (x, y) = (0, 0) Q1.1 (Show your work!) 8 Points Show that f is continuous at the point (0, 0). Please select file(s) Select file(s) Save Answer Q1.2 (Show your work!) 6 Points af Evaluate fr at all points (, y) and express (write) f(x, y) as a piecewise function. %3D Please select file(s) Select file(s) Save Answer Q1.3 (Show your work!) 4 Points a f (0,0) fry (0, 0). Evaluate A Please select file(s) Select file(s)