Explicit formulas for arithmetic sequences - Khan Academy
Learn how to find explicit formulas for arithmetic sequences. For example, find an explicit formula for 3, 5, 7,...
Explicit formulas for arithmetic sequences - Khan Academy
Sal finds explicit formulas of arithmetic sequences given the first few terms of those sequences. He also explores equivalent forms of such formulas.
Converting recursive & explicit forms of arithmetic sequences
Learn how to convert between recursive and explicit formulas of arithmetic sequences.
Explicit formulas for arithmetic sequences - Khan Academy
Solve problems such as: The first four terms in an arithmetic sequence are 12, 5, -2, and -9. Find an explicit formula for the sequence.
Explicit & recursive formulas for geometric sequences
A recursive formula defines terms of a sequence in relation to the previous value. As opposed to an explicit formula, which defines it in relation to the term number.
Converting recursive & explicit forms of geometric sequences
Use the explicit form of sequence and algebraically solve for either the input or output. Note: Solving for the output given the input is easier than the other way around.
Explicit formulas for arithmetic sequences - Khan Academy
Learn how to find explicit formulas for arithmetic sequences. For example, find an explicit formula for 3, 5, 7,...
Using explicit formulas of geometric sequences - Khan Academy
Sal finds the 5th term in the geometric sequence whose explicit formula is 3 (-¼)^ (i-1).
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Converting recursive & explicit forms of arithmetic sequences
Sal is given an arithmetic sequence in explicit form and he converts it to recursive form. Then he does so the other way around!