(D) . Note that the series converges by the Alternating Series
Test. Since the first term dropped in the estimate is , the estimate is
too high, but within 0.1 of the true sum.(C) , which equals a constant times the harmonic series.(D) We seek x such thatThen |x| < e and the radius of convergence is e.(B) The error is less than the maximum value of for .
This maximum occurs at .(D)Note that the curve is traced exactly once by the parametric equations
from t = 0 to t = 1.