Class 9 Maths · Chapter 8 · CBSE / NCERT
Predicting What Comes Next: Exploring Sequences and Progressions
Sequences and their rules. You’ll learn explicit and recursive rules, arithmetic progressions and their graphs, the sum 1 + 2 + … + n, and geometric progressions.
9 short lessons · about 36 minutes in all
What you’ll learn
- 1What a sequence is4 min
- 2Jumping straight to any term4 min
- 3Building a sequence one term at a time4 min
- 4Adding the two before4 min
- 5Same step every time: arithmetic progressions4 min
- 6An AP on a graph4 min
- 7Adding 1 to n with the staircase trick4 min
- 8Same multiplier every time: geometric progressions4 min
- 9Curves: growing and shrinking4 min
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What a sequence is · about 4 minutes
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More Class 9 Maths
The other 13 chapters.
CH 1Orienting Yourself: The Use of Coordinates8 lessonsCH 2Introduction to Linear Polynomials9 lessonsCH 3The World of Numbers10 lessonsCH 4Exploring Algebraic Identities9 lessonsCH 5I’m Up and Down, and Round and Round10 lessonsCH 6Measuring Space: Perimeter and Area10 lessonsCH 7The Mathematics of Maybe: Introduction to Probability9 lessonsCH 9Propositions and their Converses12 lessonsCH 10How Quantities Combine: Understanding Data10 lessonsCH 11The World of Algorithms10 lessonsCH 12Quadrilaterals11 lessonsCH 13Two Variables, One Line12 lessonsCH 14Math of Space: Surface Area and Volume10 lessons
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