![]() Notice how the "formula" below features exactly the same structure as the specific example right above. The generalization using algebra lets you use this same idea for any number of terms n in a sequence that starts with a1 and multiplies by r. What this boils down to is S = ((n+1)th term – 1st term)/(ratio – 1). Now we see we don't really need to do so many additions. That seems worse, doesn't it? The numbers are all bigger.īut the trick now is to take the second equation and subtract the first equation. Of course every term on the right needs to be multiplied by 4. If I don't want to add all those together, I could use the trick of multiplying both sides by 4, the common ratio. Maybe the abstraction using letters is keeping you unsure. ![]() You don't really "know" the proof if you don't understand it. Re-read your post before hitting submit, does it still make sense.Show your work! Detail what you have tried and what isn't working.Use proper spelling, grammar and punctuation.Give context and details to your question, not just the equation.Help others, help you! How to ask a good question Asking for solutions without any effort on your part, is not okay. Beginner questions and asking for help with homework is okay. Post your question and outline the steps you've taken to solve the problem on your own. Do not use ChatGPT in a question or an answerĭon't just post a question and say "HELP".Do not solicit or offer payments to complete your assignments or tests.No cheating - do not post questions from exams, tests, midterms, etc.No post flooding - Limit your posts to 2 or 3 questions a day.Don't be a jerk - don't be obnoxious or rude.Homework policy - asking for help is okay, asking to be given the solution is not.Make your question clear and concise - include steps you have tried.Stay on topic - this subreddit is for math questions no how-to guides, or non math related questions.Explain your post - show your efforts and explain what you are specifically confused with.
0 Comments
Leave a Reply. |