Hello, anyone could solve these 3 math problems please? thank you!

CHECKPOINT 6.7 00 Multiply the series " by itself to construct a series for 1 (1 I) (1 I)CHECKPOINT 6.8 Differentiate the series (1 1) (n + 1) :" term-by-term to find a power series representation for 2 on n=0 (1-I) the interval (-1, 1) .CHECKPOINT 6.9 DO Integrate the power series In (1 + x) = \\ (_1)nix" n term-by-term to evaluate / In (1 + x) dx. n 1