5. Identify the tests for series oonvergenceldivergenoe (by the proper name) that could be used on each of the following series. If necessary, rewrite the series in a format that lends itself to applying the series test: Z(1)*(2 + lg" a) k=1 k 2 arctan(5k) arctan(5k 5) b) k=1 2 Sic\" + k c) k=l 71:4 5 d)