In Exercises 1-6, is the function continuous at all points in the given region? 1. on the square -1

In Exercises 16, is the function continuous at all points in the given region? 2. 3. 4. 5. 6. on the squareI x S y S 1 on the square 1 x S 2, 1 y S 2 x2 + ya on the disk e + 1 eSin x on the rectangle x S cos y tan(xy) on the square 2 x S 2, 2 y 2 2x yon the disk x 2 + Y2 4