Q. {b(1)=−7b(n)=b(n−1)+12Find the 4th term in the sequence.
Understand the sequence definition: Understand the sequence definition.The sequence is defined recursively, with the first term b(1) given as −7. Each subsequent term is found by adding 12 to the previous term. This means that to find the 4th term, we need to apply the recursive formula three times starting from the first term.
Find the second term: Find the second term using the recursive formula.We know that b(1)=−7. To find b(2), we use the formula b(n)=b(n−1)+12.b(2)=b(1)+12=−7+12=5.
Find the third term: Find the third term using the recursive formula.Now that we have b(2), we can find b(3) by adding 12 to b(2).b(3)=b(2)+12=5+12=17.
Find the fourth term: Find the fourth term using the recursive formula.Finally, we find b(4) by adding 12 to b(3).b(4)=b(3)+12=17+12=29.