Question 21 0 pts 7+ 1 21. Determine the convergence or divergence of the series. 2x - 1 (-1)+1 22. Determine whether the series converges absolutely or conditionally, or diverges. iM 4/3 23. Find the interval of convergence of the power series. Z (-1)+ (n+1)x" 1 =0 24. Use the binomial series to find the Maclaurin series for the function. f (x) = (1 +x ) 25. Use a power series to approximate the value of the definite integral SIX with an error of less than 0.0001. X