For the arithmetic sequence with given first term 2 and common difference 3: its th term is ; its 10-th term is . I am not sure how to proceed I thought the nth term would be 3n and the 10th term 30 but I was wrong?
Follow Math Help Forum on Facebook and Google+
r is the common difference: $\displaystyle a_n=a_1+(n-1)r=2+3(n-1)=3n-1$ $\displaystyle a_{10}=a_1+9r=2+27=29$
Ok now I understand it abit more thank you and nice use of LaTeX
View Tag Cloud