Express all values of the following expressions in both polar and cartesian coordinates, and plot them. (a) squareroot i; (b) squareroot i - 1; (c) 4 squareroot -1; (d) 4 squareroot i; (e) (- 8)^1/3; (f) (3 - 4i)^1/8; (g) (1 + i)^8; (h) (1 + i/squareroot 2)^25.