1. (a) Use that e = n=0 for all to find the Maclaurin series for e-T². 1 (b) Use part (a) to write Г 0 da as an infinite series.

Determine whether the sum of the infinite series is defined. 24+(12)+6+(3)+

Use the formula for the sum of the first ii terms of an arithmetic series to find the sum of the first eleven terms of the arithmetic series 2.5,4,5.5,

Use the formula for the sum of the first nterms of a geometric series to find S9 , for the series 12,6,3,32,...