How do you find the term n=13, given #a_1=-5# and d=7?
1 Answer
Feb 22, 2017
Explanation:
For an
#color(blue)"arithmetic sequence"# the nth term is found by using the nth term formula.
#color(orange)"Reminder " color(red)(bar(ul(|color(white)(2/2)color(black)(a_n=a_1+(n-1)d)color(white)(2/2)|)))#
#rArr a_(13)=-5+(12xx7)#
#color(white)(rArra_(13))=-5+84#
#color(white)(rArra_(13))=79#
