Algebraic!

regardless of if you like “dig down” as a song, you’ve gotta admit the music video is pretty cool. @danielhowell

rt header for dan version here: x

yeah uh this took like 7-9 hours (i didn’t keep track oops) and i’m really happy with how it turned out. dig down isn’t one of my favorites that muse has released but the music video design was so cool so i had to.

A visiting Professor of Linguistics was delivering a lecture.

“In the grammars of many languages throughout the world, a double negative expresses a positive. On the other hand there are some languages, such as Russian and the English of Chaucer, in which a double negative remains a negative. However, there is not a language in the world in which a double positive can express a negative.”

A voice from the back of the room piped up: “Yeah, right.”

Why on earth is matrix multiplication NOT commutative ? – An Intuition

One is commonly asked to prove in college as part of a linear algebra problem set that matrix multiplication is not commutative. i.e If A and B are two matrices then :

But without getting into the Algebra part of it, why should this even be true ? Let’s use linear transformations to get a feel for it.


If A and B are two Linear Transformations namely Rotation and Shear. Then it means that.

Is that true? Well, lets perform these linear operations on a unit square and find out:

(Rotation)(Shearing)

(Shearing)(Rotation)

You can clearly see that the resultant shape is not the same upon the two transformations.

This means that the order of matrix multiplication matters a lot ! ( or matrix multiplication is not commutative.)

Have a great day!

Tim Drake is the kind of person who, during the last few weeks of school, barely attends classes, doesn’t do his homework, and doesn’t bring anything more to school than a crumpled piece of loose leaf and a crayon. His teachers keep tell him that if he keeps it up he won’t be prepared for finals, but Tim falls asleep halfway through the conversation. 

Finals week comes, and Tim has literally studied nothing. Not a single review sheet. On testing days he gets two hours of sleep at most and brings only a broken pencil with him that he found on his way to school, yet somehow he gets a perfect 100 on every single exam. His teachers and peers are dumbfounded. 

I wrote an essay to convince my teacher to let us watch Lilo and Stitch in class.

A few weeks ago in my math class everyone was really tired. So someone suggested we watched a movie instead of doing work that day. Then I immediately said that we should watch Lilo and Stitch (because why not). For the most part everyone in class agreed with me. But my teacher wasn’t buying that I was being dead serious about wanting to watch it. So he said as a joke that if came to school the next day and had written an essay on how Lilo and Stitch relates to math he would consider letting us watch it in class. I told him that if he wanted a paper, a paper he was going to get. But he still didn’t believe me. The next day I walk into class with this paper.

It didn’t work. We still haven’t watched Lilo and Stitch. I’m still salty.

i want to emphasise how much i love adventure time for how GROSS it allows its female characters to be we always see finn and jake doing yucky bodily stuff but for once it extends to the other sex! like marceline is this really cool demon vampire queen, described as ‘sexy’ by other characters, who we also see picking her nose (and wiping her snot on the settee), not washing her hands after using the loo, digging bugs out of her belly button, and actually being drawn as the ugly shapeshifting monster she occasionally is instead of being prim and proper all of the time. there’s a muscle princess and a slime princess and raggedy princess and they’re all in-depth characters who independently rule their own kingdoms despite not being ladylike at all bubblegum is a real fucking sociopathic dick half the time who gets way too caught up in her goals and puts literal lives on the line in order to get what she wants it’s just nice to see girls normalised as actual humans for once. or vampires/bubblegum/slime. whatever.

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[2/4/17]

The clock says 2:51 yet I post it at 6:16 because I procrastinated on posting something that I already made. What is the truth? We may never know. Anyway, here are my trig notes. We’d done some trig last year in geometry, but we’re getting a lot more in depth in Algebra 2.

||SOTD: Thumbs by Sabrina Carpenter||