In #1-2, find a power series representation for the function. 1. f(x) = In(5-z) TS 2. f(I) = (x - 2)2 3. Evaluate 1 - t8 dt as a power series and find its radius of convergence. 0.4 4. Use a power series to approximate In(1 + r*) dr with error less than 5 x 10-7 *5. (a) Starting with the geometric series _x", find the sum of the series 2 . |z na, x