A-Level Maths: D1-26 Binomial Expansion: Introducing the Range of Validity

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This is a lot fuller, better AND a lot more fun than my textbook explanation (which was hurting my head, due to being hard AND uninteresting at the same time). I'm so grateful for these clear "explorations" that TL has done for us, ... I would have not KNOWN what explorations to conduct.

helenday
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Thanks you have solved a question which has been in my mind for a long time

kazishahjalal
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Я русскоязычный преподаватель в школе и все никак не могла понять этот нюанс. Спасибо вам. Лучшее объяснение

ДиляраШарафутдинова-ът
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Not sure if this is a silly question: But why isn't it called the "Domain of Validity" since it's the set of inputs for which the function is valid? Oh because it's the "Range of values of x"... My bad ;)

taegan
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Hello, when I expand (1+x)^-100 with x=0.9 I get a diverging sequence although in theory it should converge?

rachelclaire