Graph the Sequence Defined By $a _ { n } = ( - 1 ) ^ { n } \frac { 2 n + 1 } { n + 2 }$

Q85: Approximate the sum to the indicated

Q86: Find a power series representation for

Q87: When money is spent on goods

Q88: Determine whether the given series converges

Q89: Test the series for convergence or

Q91: Determine whether the sequence defined by

Q92: Find the radius of convergence of

Q93: Use the power series for

Q94: Use the sum of the first

Q95: Test the series for convergence or