Q. If a1=9 and an+1=5an+3 then find the value of a5.Answer:
Given Information: We are given the first term of the sequence, a1=9, and the recursive formula an+1=5an+3. To find a5, we need to find the values of a2, a3, and a4 first, using the recursive formula.
Find a2: Let's find a2 using the recursive formula:a2=5a1+3=5×9+3=45+3=48.
Find a3: Now, let's find a3 using the recursive formula:a3=5a2+3=5×48+3=240+3=243.
Find a4: Next, we find a4 using the recursive formula:a4=5a3+3=5×243+3=1215+3=1218.
Find a5: Finally, we find a5 using the recursive formula:a5=5a4+3=5×1218+3=6090+3=6093.
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