- Show that the sum of the first
n
squares isn(n+1)(2n+1)/6
. - I know this is often in the textbook for proof by induction, which is why proof by induction is not allowed.
This is a relatively hard one, take your time.
n
squares is n(n+1)(2n+1)/6
.This is a relatively hard one, take your time.
Hint:
spoiler
It is often helpful to visualise the problem, build it in minecraft to see if u notice anything.
Note that the sum of first n natural numbers can be proven without induction, as shown below![](https://lemmy.world/pictrs/image/854e5b2e-02ed-41a5-a93e-6c61355fbf30.png)
Solutions:
spoiler
https://gmtex.siri.sh/fs/1/School/Extra/Maths/Qotd solutions/2024-05-09_sum-of-squares.html![](https://lemmy.world/pictrs/image/167dcb2f-bca2-4f1d-99af-7d117b46b737.png)