posting of quizzes or lists of questions.offers or solicitations of payment in any form.personal information (Check your documents before posting.).r/LearnMath Chatroom Join the unofficial IRC channel: #LearnMath on Freenode (no client required). Reddit Enhancement Suite allows Imgur URLs to be expanded inline but doesn't work so well for other image-hosts.ĬhatGPT and other large language models are not designed for calculation and will frequently be /r/confidentlyincorrect in answering questions about mathematics even if you subscribe to ChatGPT Plus and use its Wolfram|Alpha plugin, it's much better to go to Wolfram|Alpha directly.Įven for more conceptual questions that don't require calculation, LLMs can lead you astray they can also give you good ideas to investigate further, but you should never trust what an LLM tells you.We recommend using Imgur to upload images for linking inside posts.Include any equations or assumptions you are using, and descriptions of any attempts you have made.Where are you in the process? Provide those who help with as much information as possible. What does your instructor (or the text) want you to accomplish? To receive the best help, please use the following format: Sample topic questionĮX: Quadratic Equations EX: Probability Be civil and polite this is meant to be an approachable community for discussion of reason and logic. Questions, no matter how basic, will be answered (to the best ability of the online subscribers).įollow reddiquette. Post all your math-learning resources here. This is a subreddit for learning math, and can be seen as a sister subreddit to /r/math. Think /r/math is too advanced? Here, the only stupid question is the one you don't ask. We're no longer participating in the protest against excessive API fees, but many other subreddits are check out the progress among subreddits that pledged to go dark on 12 July 2023 and the top 255 subreddits (even those that never joined the protest). | Each post must include a specific title and description. Problem 4: Find the explicit formula of the following geometric sequence 4, 8, 16, 32, 64,…Īnswer: 1) an = an-1 + 10 where a1 = 24 2) an = an-1 * 4 where a1 = 9 3) an = 4n + 5 4) an = 4 * 2n – 1.Set your post to "Resolved" when answered. Problem 3: Find the explicit formula of the following arithmetic sequence 9, 13, 17, 20, 23, 26, 29,… Problem 2: First term of the sequence a1 = 9, common ratio r = 4, find the recursive formula of the geometric sequence. Problem 1: First term of the sequence a1 = 24, common difference d = 10, find the recursive formula of the arithmetic sequence. Recursive and Explicit Formulas – Practice Problems Therefore, explicit formula of the given geometric sequence is an = 3 * 4n – 1. Therefore, explicit formula of the given arithmetic sequence is an = 6n + 5.Įxample 4: Find the explicit formula of the following geometric sequence 3, 12, 36, 108, 432,…įirst term a1 = 3, common ratio r = `12/3` = 4 Use nth term formula to find the explicit formula Therefore, recursive formula of the geometric sequence is of the an = an-1 * 3 where a1 = 12.Įxample 3: Find the explicit formula of the following arithmetic sequence 11, 17, 23, 29, 35, 41, 47,…įirst term a1 = 11, common difference d = 17 – 11 = 6 Therefore, recursive formula of the arithmetic sequence is of the an = an-1 + 14 where a1 = 28.Įxample 2: First term of the sequence a1 = 12, common ratio r = 3, find the recursive formula of the geometric sequence. Recursive and Explicit Formulas – Example ProblemsĮxample 1: First term of the sequence a1 = 28, common difference d = 14, find the recursive formula of the arithmetic sequence.įirst term a1 = 28, common difference d = 14. Explicit formula is used to find the nth term of the sequence using one or more preceding terms of the sequence. Recursive formula is used to find the next term of the sequence using one or more preceding terms of the sequence. Geometric sequence is a sequence of numbers such that the ratio between two successive members of the sequence is a constant. Arithmetic sequence is a sequence of numbers such that the difference between two successive members of the sequence is a constant.
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