https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:sequences/x2f8bb11595b61c86:introduction-to-arithmetic-sequences/v/arithmetic-sequences 2021-06-30T17:32:39Z Intro to arithmetic sequences Sal introduces arithmetic sequences and their main features, the initial term and the common difference. He gives various examples of such sequences, defined explicitly and recursively. Sal Khan video https://cdn.kastatic.org/googleusercontent/OrgsHeMoJUc6-j5RLRoUIVcaYF-Q39nGk23bLLQKOPj4-e45JJZypOWsNNXFilJ9aITPS6AX4kJKgtfWn7HFcAlI Intro to arithmetic sequences Sal introduces arithmetic sequences and their main features, the initial term and the common difference. He gives various examples of such sequences, defined explicitly and recursively. https://cdn.kastatic.org/ka-youtube-converted/_cooC3yG_p0.mp4/_cooC3yG_p0.mp4 427 Sequence and pattern https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:sequences/x2f8bb11595b61c86:introduction-to-arithmetic-sequences/a/introduction-to-arithmetic-sequences 2021-07-02T22:45:33Z Intro to arithmetic sequences Get comfortable with sequences in general, and learn what arithmetic sequences are. article https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:sequences/x2f8bb11595b61c86:introduction-to-arithmetic-sequences/v/extending-arithmetic-sequences 2022-10-06T23:01:00.745424633Z Extending arithmetic sequences Sal extends the arithmetic sequences -8, -14, -20, -26,... and 2, -1, -4, -7, -10,... to find their next terms. video https://cdn.kastatic.org/ka_thumbnails_cache/aabf6845-28cd-447b-ae73-4cc2a9dea1a5_1280_720_base.png Extending arithmetic sequences Sal extends the arithmetic sequences -8, -14, -20, -26,... and 2, -1, -4, -7, -10,... to find their next terms. https://cdn.kastatic.org/ka-youtube-converted/EU0c6qrrevA.mp4/EU0c6qrrevA.mp4 67 Sequence and pattern https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:sequences/x2f8bb11595b61c86:introduction-to-arithmetic-sequences/e/arithmetic_sequences_1 2025-12-30T07:05:15.972746521Z Extend arithmetic sequences Given the first few terms in an arithmetic sequence, find the next term in the sequence. Tomer Gal exercise https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:sequences/x2f8bb11595b61c86:introduction-to-geometric-sequences/v/geometric-sequences-introduction 2021-06-30T17:32:40Z Intro to geometric sequences Sal introduces geometric sequences and their main features, the initial term and the common ratio. Sal Khan video https://cdn.kastatic.org/googleusercontent/EGwJyoWiNK9S9o40xAqCEN70zhYCxmMpzmSCp5vp890CX6dQLAk-NetWrz9x17rxaUPCwwEGRpjxhQT_2WdqYjk Intro to geometric sequences Sal introduces geometric sequences and their main features, the initial term and the common ratio. https://cdn.kastatic.org/ka-youtube-converted/pXo0bG4iAyg.mp4/pXo0bG4iAyg.mp4 645 Sequence and pattern https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:sequences/x2f8bb11595b61c86:constructing-geometric-sequences/a/geometric-sequences-review 2021-04-29T07:51:04Z Geometric sequences review Review geometric sequences and solve various problems involving them. article https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:sequences/x2f8bb11595b61c86:introduction-to-geometric-sequences/v/extending-geometric-sequences 2022-10-06T23:01:00.745424633Z Extending geometric sequences Sal finds the next term in the geometric sequence -1/32, 1/8, -1/2, 2,... video https://cdn.kastatic.org/ka_thumbnails_cache/ba585e9b-9023-49a7-9cad-b34b80080b0e_1280_720_base.png Extending geometric sequences Sal finds the next term in the geometric sequence -1/32, 1/8, -1/2, 2,... https://cdn.kastatic.org/ka-youtube-converted/yZ-GufE_uyA.mp4/yZ-GufE_uyA.mp4 134 Sequence and pattern https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:sequences/x2f8bb11595b61c86:introduction-to-geometric-sequences/e/geometric_sequences_1 2025-11-05T21:00:42.500191293Z Extend geometric sequences Given the first few terms in a geometric sequence, find the next term in the sequence. Tomer Gal exercise https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:sequences/x2f8bb11595b61c86:introduction-to-geometric-sequences/e/extend-geometric-sequences-negatives-fractions 2021-07-08T21:56:39Z Extend geometric sequences: negatives & fractions Find the next term in a geometric sequence. The problems in this quiz involve relatively difficult calculations. Tomer Gal exercise https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:sequences/x2f8bb11595b61c86:introduction-to-arithmetic-sequences/v/using-arithmetic-sequences-formulas 2022-10-06T23:01:00.745424633Z Using arithmetic sequences formulas Sal finds terms of arithmetic sequences using their explicit and recursive formulas. video https://cdn.kastatic.org/ka_thumbnails_cache/aff2f5cf-6ff8-4b74-884e-52868fb9c89a_1280_720_base.png Using arithmetic sequences formulas Sal finds terms of arithmetic sequences using their explicit and recursive formulas. https://cdn.kastatic.org/ka-youtube-converted/8eSUbi_aYL4.mp4/8eSUbi_aYL4.mp4 218 Sequence and pattern https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:sequences/x2f8bb11595b61c86:introduction-to-arithmetic-sequences/a/using-formulas-of-arithmetic-sequences 2021-06-30T17:32:37Z Intro to arithmetic sequence formulas Get comfortable with the basics of explicit and recursive formulas for arithmetic sequences. article https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:sequences/x2f8bb11595b61c86:constructing-arithmetic-sequences/v/explicit-formulas-for-arithmetic-sequences 2022-10-06T23:01:00.745424633Z Explicit formulas for arithmetic sequences Sal finds explicit formulas of arithmetic sequences given the first few terms of those sequences. He also explores equivalent forms of such formulas. video https://cdn.kastatic.org/ka_thumbnails_cache/648ffef4-6cad-40b4-bef8-6e92ac624996_1280_720_base.png Explicit formulas for arithmetic sequences Sal finds explicit formulas of arithmetic sequences given the first few terms of those sequences. He also explores equivalent forms of such formulas. https://cdn.kastatic.org/ka-youtube-converted/ViLt2WI0XSg.mp4/ViLt2WI0XSg.mp4 377 Sequence and pattern https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:sequences/x2f8bb11595b61c86:constructing-arithmetic-sequences/a/writing-explicit-formulas-for-arithmetic-sequences 2021-06-30T17:32:39Z Explicit formulas for arithmetic sequences Learn how to find explicit formulas for arithmetic sequences. For example, find an explicit formula for 3, 5, 7,... article https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:sequences/x2f8bb11595b61c86:constructing-arithmetic-sequences/e/explicit-formulas-for-arithmetic-sequences 2026-03-10T04:30:37.966653692Z Explicit formulas for arithmetic sequences 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. Tomer Gal exercise https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:sequences/x2f8bb11595b61c86:constructing-arithmetic-sequences/v/finding-the-100th-term-in-a-sequence 2021-02-16T05:02:27Z Arithmetic sequence problem Sal finds the 100th term in the sequence 15, 9, 3, -3... Sal Khan video https://cdn.kastatic.org/googleusercontent/x3JWFXznBvlgzB1Y7p3RUF9raYYEkKlf4_Rnl7dnFR4XAfw0nNAF0dkNJhaO63sKgmGsoqapSDiOfDNs4uvvVb8m Arithmetic sequence problem Sal finds the 100th term in the sequence 15, 9, 3, -3... https://cdn.kastatic.org/ka-youtube-converted/C5titprQAc4.mp4/C5titprQAc4.mp4 357 Sequence and pattern https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:sequences/x2f8bb11595b61c86:introduction-to-geometric-sequences/v/using-explicit-formulas-of-geometric-sequences 2022-10-06T23:01:00.745424633Z Using explicit formulas of geometric sequences Sal finds the 5th term in the geometric sequence whose explicit formula is 3(-¼)^(i-1). video https://cdn.kastatic.org/ka_thumbnails_cache/3f2bf255-3698-4bc0-84d7-cfc4adfdb1d1_1280_720_base.png Using explicit formulas of geometric sequences Sal finds the 5th term in the geometric sequence whose explicit formula is 3(-¼)^(i-1). https://cdn.kastatic.org/ka-youtube-converted/HODIXLzIMIk.mp4/HODIXLzIMIk.mp4 97 Sequence and pattern https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:sequences/x2f8bb11595b61c86:introduction-to-geometric-sequences/e/geometric_sequences_2 2025-03-01T15:52:37.13987578Z Use geometric sequence formulas Given the formula of a geometric sequence, either in explicit form or in recursive form, find a specific term in the sequence. Tomer Gal exercise