Algebruary Day 14 Short

This was an interesting one. I hope to make a followup video one day talking more about the complex plane.

[TeraChad]

Interesting way to display the complex numbers. I've never seen it that way anywhere else, and this version helped me understand it a lot better. Thanks Andy :D

[peterfalconer]

This is so cool it makes me want to (re)start learning maths.

[jonathanreynolds]

Bloody magic it is. I appreciate you strengthening my math skills like this.

[Croccifixo]

Never heard about that theorem, but knowing that multiplication on complex numbers equates to rotation around the origin (0 + 0i), making a circle with radius 9 and splitting that circle in 5 equal parts seemed like the obvious solution. Now visualizing that as an inscribed pentagon to get the angles easier for trigonometry is actually an interesting way to see it, makes it so much easier, I would have tried something related to 2(pi)/5

[jmaxim]

Haven't looked at De Moivre's theorem since high school "A" Level Math.

[Econ_geek]

2hrs ago we just treated this exact theorem. Fantastic 🎉

[tanusheoran]

This is awesome to watch a unique way to find complex solutions
wow

I am from india and i like your videos😊😊

[youngnedyoung]

This is like watching a film where the crime is solved in the first half, and you think the film is done, only for a clue to be revealed that sends the film in a totally different direction and i feel like I've seen this film and i don't know what it's called, but i need to watch it now!!!

[LillaVargR]

my solution for 9 works but is less elegant. I used a calculator to get 3^11/3 which become x^5 so i did the 5 root of the number i got from the equation to get 9.

[petevenuti]

Would an irreducible N-ary function be an inverse of a power of n?
And is this how you get formulas for regular polygons in Cartesian coordinates?

[JohnGavain]

Is there any other way to know that the other four solutions are complex?

[jaybeeau]

You are so amazing
Can you do tutoring ?

[hermannjunio]

I thought i was a kinda smart guy, then i found this chanel... 😅😅😅😅

[Chess_Master_]

This one was pretty easy. Did it in my head.

[luisfilipe]

I always confuse multiplication of exponents with addition

[ЕвгенийПетров-вп]

I was about to say seems too easy for this man's videos and then...

[DarkShard]

this is the first one of these i was actually able to do

[NotTrioA]

Does this work for all such questions?

[ekinteko]

Instructions unclear, raised the devil.

[Kevin-yzji]

Technically speaking, isn't x = 9 considered a complex number too since it has the form of x = a + 0i? 😁😁