+Lance Maderal No one seems to know. We just do it. It's bad teaching. I am trying to find a video that explains why we magically decide to multiply by the common ratio. It doesn't make sense to me.
+Fat_Unicorn12 i strongly agree.. you can watch the video here first to get a better intuition /watch?v=17y9gmqoG3o ...the closest intuitive explanation i can formulate for my own understanding is the multiplication of r in the second line of equation is derived by understanding that the procedure of summing an infinitely big geometric series is very identical to summing a series that is small or finite. therefore, as the common ratio, being -1
+Lance Maderal is your teacher educated? R is the algebric constant of the coefficient that is receiving the power n, whereas a is the number that could have been a multiple of r^n that makes the Geometric Progression look more complicated than usual for eg. (1/9)(r^n) where r could be 5. Therefore by expanding each term of (1/9)(5^n) you get 0.55555 , 2.77777 , 13.8888 so in this case (1/9) can be factorised out to get the real geometric progression 5^n
Pentrax BTD lol i think you misunderstood his question. he was referring to the next line of expression. he asked why do we have to multiply the 2nd expression by r to cancel out terms from the first expression.
Cool for finance!
How come this video is not on the website?
Math is like beautiful magic
What happens when subscript n starts at 0?
What the hell is happening here???
No wait, I got it now.
Same teach me
@@myaccount2595 lmao bro that was 6 years ago, I already gave up and just dropped out of college. Good luck to you
@@mono_tone_s no way bro I am also in the path of giving u,give me hope TwT
@@myaccount2595 Get good sleep, go to class, stay focused, and stay organized! You got this! Best of luck to you.
Amazing!
sir i need to find formula for
1,6,6,1,2,5,5,2,3,4,4,3
where Nmax=n
no of elements=n*2
what should i do
This is the same method you use to derive the formulas for perpetuities and annuities in finance.
Cool
no, i think he makes these videos according to the general curriculum
Very good.
this came out a few hours after my math test (last question was on geometric serie). coincidence??/
why do you need to multiply both sides by r? my teacher is asking us
Oh. Yeah. Got that. Thanks. By our teacher is asking us why you have to multiply it by r. So, yeah. Thanks
+Lance Maderal No one seems to know. We just do it. It's bad teaching. I am trying to find a video that explains why we magically decide to multiply by the common ratio. It doesn't make sense to me.
+Fat_Unicorn12 i strongly agree.. you can watch the video here first to get a better intuition /watch?v=17y9gmqoG3o ...the closest intuitive explanation i can formulate for my own understanding is the multiplication of r in the second line of equation is derived by understanding that the procedure of summing an infinitely big geometric series is very identical to summing a series that is small or finite. therefore, as the common ratio, being -1
+Lance Maderal is your teacher educated? R is the algebric constant of the coefficient that is receiving the power n, whereas a is the number that could have been a multiple of r^n that makes the Geometric Progression look more complicated than usual for eg. (1/9)(r^n) where r could be 5. Therefore by expanding each term of (1/9)(5^n) you get 0.55555 , 2.77777 , 13.8888 so in this case (1/9) can be factorised out to get the real geometric progression 5^n
Pentrax BTD lol i think you misunderstood his question. he was referring to the next line of expression. he asked why do we have to multiply the 2nd expression by r to cancel out terms from the first expression.
This video is missing from khan academy's app.
Yes.