What can narrow your search results when using the index search feature in the menu? a- typing a keyword b- typing a function c- typing a letter d- typing a number

Consider the series where in this problem you must attempt to use the ratio test to decide whether the series converges. compute enter the numerical value of the limit l if it converges, inf if it diverges to infinity, minf if it diverges to negative infinity, or div if it diverges but not to infinity or negative infinity.