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Recursion Sequences  Problem 3
Alissa Fong
Alissa Fong
MA, Stanford University
Teaching in the San Francisco Bay Area
Alissa is currently a teacher in the San Francisco Bay Area and Brightstorm users love her clear, concise explanations of tough concepts
A recursive formula requires that you know the previous term in order to find the next one that is, you need to know term n1 in order to find term n. The formula itself will have " a sub n  1." An explicit formula only has "a sub n." You can find any term without having to know any terms around it. If you're asked to determine whether a formula is recursive or explicit, look to see if you're given the first term and " a sub n  1" (recursive) or just " a sub 1" (explicit.)
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Alissa Fong
M.A. in Secondary Mathematics, Stanford University
B.S., Stanford University
Alissa has a quirky sense of humor and a relatable personality that make it easy for students to pay attention and understand the material. She has all the math tips and tricks students are looking for.
Your tutorials are good and you have a personality as well. I hope you have more advanced college level stuff, because I like the way you teach.”
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Recursion Sequences
Problem 1 5,573 viewsGiven a_{1} = 1, a_{2} = 2, and a_{n} = 2a_{n−1} + a_{n−2}
Find the next three terms. 
Recursion Sequences
Problem 2 698 views 
Recursion Sequences
Problem 3 671 views 
Recursion Sequences
Problem 4 631 views 
Recursion Sequences
Problem 5 667 views 
Recursion Sequences
Problem 6 587 views
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