In Problem, try to fill in the blanks without referring back to the text.(a) Interpret the...

In Problem, try to fill in the blanks without referring back to the text.

(a) Interpret the circular mnemonic for positive integer powers of i given in FIGURE 1. Use this mnemonic to find in for the following values of n:

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(b) Reinspect the powers n in the four rows in part (a) and then divide each these powers by 4. Based on your discovery, discern an easy rule for determining in for any positive integer n. Use your rule to compute

FIGURE 1