woo hoo got 20 amazing, i remembered the Sigma function thanks for the fun. it's also the Function AutoSun Symbol in M/S Excel spreadsheets, under the Formulas Tab. And part of my fraternity's name.
I always enjoy watching the math questions you present. Thank you. But may I ask what editing tool you are using. I am also planning to make some contents of science.
Ah, a new symbol arrives! Let us examine what it brings. So, the large “E” character here is actually an uppercase Greek letter sigma, which in mathematics is used to denote the summation of a series of terms, the number of such terms running from a variable below the sigma (i) equal to the first term of the variable (1) to a value listed above the sigma (4). The terms of the series is denoted to the right of sigma (2i). In this case, we have: The sum of terms of 2i from i=1 to i=4. So, we need to take 2i and substitute in i=1, 2, 3, and 4; then sum the resulting terms, or: = (2*1) + (2*2) + (2*3) + (2*4) Let’s just do the straightforward thing: = 2 + 4 + 6 + 8 = 20 Alternatively, you could solve it like this: = (2*1) + (2*2) + (2*3) + (2*4) = 2(1 + 2 + 3 + 4) = 2(10) = 20 Either way, the sum of these terms is 20. Any questions?
woo hoo got 20 amazing, i remembered the Sigma function thanks for the fun.
it's also the Function AutoSun Symbol in M/S Excel spreadsheets, under the Formulas Tab.
And part of my fraternity's name.
And here I thought "i" meant the square root of (-1).
Thank you
I always enjoy watching the math questions you present. Thank you. But may I ask what editing tool you are using. I am also planning to make some contents of science.
Must admit, I'm curious too. It would be helpful if we go back to online tutoring at work
Ah, a new symbol arrives! Let us examine what it brings.
So, the large “E” character here is actually an uppercase Greek letter sigma, which in mathematics is used to denote the summation of a series of terms, the number of such terms running from a variable below the sigma (i) equal to the first term of the variable (1) to a value listed above the sigma (4). The terms of the series is denoted to the right of sigma (2i). In this case, we have:
The sum of terms of 2i from i=1 to i=4.
So, we need to take 2i and substitute in i=1, 2, 3, and 4; then sum the resulting terms, or:
= (2*1) + (2*2) + (2*3) + (2*4)
Let’s just do the straightforward thing:
= 2 + 4 + 6 + 8
= 20
Alternatively, you could solve it like this:
= (2*1) + (2*2) + (2*3) + (2*4)
= 2(1 + 2 + 3 + 4)
= 2(10)
= 20
Either way, the sum of these terms is 20.
Any questions?
I got it! Took a lesson from (Gauss??) summing 1 to 100.
🙏🌺
=2(1+2+3+4)
=2(10)
=20
What happened if i=2
2 + 4 + 6 + 8 = 20
WHY did our loyal scribe use lower-case "i" rather than ANY OTHER variable?!
I thought we had to calculate the sum of Zi.
.. Your 2 looks line a Z 😅