Geometric sequences | Sequences, series and induction | Precalculus | Khan Academy

An introduction to geometric sequences

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Precalculus on Khan Academy: You may think that precalculus is simply the course you take before calculus. You would be right, of course, but that definition doesn't mean anything unless you have some knowledge of what calculus is. Let's keep it simple, shall we? Calculus is a conceptual framework which provides systematic techniques for solving problems. These problems are appropriately applicable to analytic geometry and algebra. Therefore....precalculus gives you the background for the mathematical concepts, problems, issues and techniques that appear in calculus, including trigonometry, functions, complex numbers, vectors, matrices, and others. There you have it ladies and gentlemen....an introduction to precalculus!

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[KylasVlogs]

I'm so freaking confused this has to be the worst unit we have learned so far

[saminm]

I hope you done some videos about the sum of both types of sequences with their proof

[teabiscuit]

I would probably fail my igcse exams if your vids didn't exist.

[catherinekobleyberke]

Love how easy you make this to understand.

[greerhanshaw]

Does a geometric sequence start at 0 or 1? I see different representations across websites. Is it my choice to decide whether to start at 0 or 1?

[tar]

I thought that sequences were only allowed to change by a fixed amnt each time, in a linear fashion. Why is he allowed to multiply 'a' by 'r' (a x r ) each time?

[madpennyando]

could anyone help me with compound interest that also has deposits

[cgaming]

yes, but how do I find the ratio with 2 separate numbers: a(1), 20, a(3), 11.25, a(4).
That is what I have been trying to get answered for the past 3-4 hours. I am almost locked out of the quiz because of winging it off of so many videos.

[blitzwaffe]

This video is great for review in my class :)

[ohgodyourefat]

🔇GET 🔇BACK 🔇TO 🔇LEARNING 🔇STOP 🔇LOOKING 🔇THROUGH 🔇THE 🔇COMMENTS 🔇

[gtxhunter]

why does my homework say Geometric sequence A(n)=a(1)(r)^x and it works for my awnsers but then another sheet says a1(r)^x-1

[IncelCherub]

my pre calc professor is an old guy with a thick Russian accent that doesn't speak very loud and has a mask on...

[matabeleman]

are you speaking english..I cant seem to understand what you are saying? are you just making this up as you go along?