bro like, school doesn't even need teachers teaching them live. they could just give a link to a video like this and then if the students have any questions, they go to the teacher. i cant believe school hasn't even implemented this system since its A LOT more efficient.
I believe the formula you are using is [a(r^(n)-1)]/[r-1] which is identical to this formula if you multiply the numerator and denominator by negative 1. You can do that because you are really multiplying by 1 (-1/-1), but it reverses the signs in the formula. Hope this helps. FYI: If you saw my previous post, I realized I made an incorrect assumption.
I have a question. I am working through some problems and the very last one in the chapter on finite geometric series asks: Given the partial sums S3= -49/8, S4 = -105/16, and S5= -217/32 find the common ratio. I have tried systems of equations every which way I can think of and cannot solve the problem. Can you please help?
See the sequences and series quick review I did here to review the important must know concepts: th-cam.com/video/Tj89FA-d0f8/w-d-xo.html
+Mariosmathtutoring Thank you SO much!!!!! Its crazy that now I now understand this more from your video rather than from what my teacher taught me!!!
+Christian Matson great! Glad my video helped you!
bro like, school doesn't even need teachers teaching them live. they could just give a link to a video like this and then if the students have any questions, they go to the teacher.
i cant believe school hasn't even implemented this system since its A LOT more efficient.
@@tongs1073 disagree
Your videos help me so much!! They really make me understand why formulas work :))) Thank you so much.
You’re welcome! Glad my videos are helping you clayer bayer!
Short and sweet. Thanks for the refresher.
You’re welcome Daniel!
thanks again for helping with my homework!
Such a useful video.
What happens when n=0.
Do i add one to n?
Extremely helpful!
Great! Glad my video helped you!
Thank you very much
3:07
since it ends with a ...
don't we use the infinite equation?
Depends on the ratio….
Thank you so much sir 😊
Most welcome!
There's another formula where it's (r)^n -1 instead of 1-(r)^n. How do we decide when to use which formula?
+Ayush Kumar good question...I'd have to see the formula you are referring but it's possible that a -1 was factored out.
I believe the formula you are using is [a(r^(n)-1)]/[r-1] which is identical to this formula if you multiply the numerator and denominator by negative 1. You can do that because you are really multiplying by 1 (-1/-1), but it reverses the signs in the formula. Hope this helps. FYI: If you saw my previous post, I realized I made an incorrect assumption.
Thank you totally aced math
Great! Glad my videos have helped you!
I have a question. I am working through some problems and the very last one in the chapter on finite geometric series asks: Given the partial sums S3= -49/8, S4 = -105/16, and S5= -217/32 find the common ratio. I have tried systems of equations every which way I can think of and cannot solve the problem. Can you please help?
Very very well done
Glad you liked the video!
Thank you
THANK YOU!!!
+boopyoongi your welcome!
Sir how the formula derived
thank you!!!!
Why divide by 1-2?
You still want an answer?
thx
You’re welcome Yuting!
thank yoU!!
+awesomesauce your welcome!
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