Discover and read the best of Twitter Threads about #determinant
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I remember reading about determinants in high school. The name was scary and not much context was given. 😦
For a long time, a determinant was just a value I had to blindly compute using a formula.
Here's what I would like to know about determinants when I first started... 🧵 twitter.com/i/web/status/1…
For a long time, a determinant was just a value I had to blindly compute using a formula.
Here's what I would like to know about determinants when I first started... 🧵 twitter.com/i/web/status/1…
The word "determinant" appears when we are learning about matrices.
And since we want to build some *intuition*, let's look at a simple 2x2 matrix first.
We learn that the determinant of a 2x2 matrix is:
| a b |
| c d | = a*d - b*c
But where does that come from?
And since we want to build some *intuition*, let's look at a simple 2x2 matrix first.
We learn that the determinant of a 2x2 matrix is:
| a b |
| c d | = a*d - b*c
But where does that come from?
Alright, let's go back in time!
Seki Kōwa was a Japanese mathematician from the Edo period. He had Samurai origins but was adopted into the noble Seki family, subject of the shōgun.
As a kid, he had great potential with numbers. He was often called "Japan's Newton".
Seki Kōwa was a Japanese mathematician from the Edo period. He had Samurai origins but was adopted into the noble Seki family, subject of the shōgun.
As a kid, he had great potential with numbers. He was often called "Japan's Newton".
You know I always add some #math spice into my #gamedev courses, and that usually means touching some cool linear algebra.
But something most students still struggle with is the *intuition* behind the #Determinant of a matrix.
Let's quickly look at it together...🙂
[1/18] 🧵
But something most students still struggle with is the *intuition* behind the #Determinant of a matrix.
Let's quickly look at it together...🙂
[1/18] 🧵
Since we are really interested in building some *intuition*, let's look at the determinant of a 2x2 matrix first.
When we were in high school, we learned that the determinant of a 2x2 matrix is given by:
| a b |
| c d | = a*d - b-c
But, where does that come from?
[2/18]
When we were in high school, we learned that the determinant of a 2x2 matrix is given by:
| a b |
| c d | = a*d - b-c
But, where does that come from?
[2/18]
Seki Kōwa was a Japanese mathematician from the Edo period, and he was sometimes described as "Japan's Newton."
He had Samurai origins but was adopted into the noble Seki family, subject of the shōgun.
As a kid, it was visible that he had great potential with numbers.
[3/18]
He had Samurai origins but was adopted into the noble Seki family, subject of the shōgun.
As a kid, it was visible that he had great potential with numbers.
[3/18]
