Wow, This Was Really Intresting

Numberphile (https://www.youtube.com/channel/UCoxcjq-8xIDTYp3uz647V5A) Got some good videos on the subject.

Heres one that introduce the topic: https://www.youtube.com/watch?v=aqyyhhnGraw

Did you know that there’s a whole branch of topology called knot theory studying knots?

Find out more here: https://en.m.wikipedia.org/wiki/Knot_theory

Important topic!

Spread the word! 

Science is being defunded around the world. Help us spread the importance of science, by sharing this video!

Despite our achievements, science and society are often at odds. Scientific discoveries like the Earth is round, that our planet revolves around the sun, or that diseases are spread through germs were all once ideas that were rejected by society. So much so that Giordano Bruno was burned at the stake for suggesting the Earth wasn’t the centre of the universe, and even Galileo was sentenced to house arrest for supporting the theory. Today we see the rejection of scientific evidence for vaccinations - leading to preventable disease like measles coming back, after being wiped out in the year 2000; or the rejection of scientific evidence for climate change, despite the vast consensus among scientists.

Let’s spread our love of science further, so others can learn to understand and appreciate it! Your sharing is appreciated

Hey IBM,  Always loved your posts. BUT THIS, you want people to drink milk from a cow? The milk is for the calf! Shame on you for spreading the lie that milk is good for the body. It’s proven that milk is not good for humans after the age of 12. Stop treat animals like they are made for us humans to abuse! There is no humane way to kill or inseminate another living creature! Hope this is your first and last post propagates for animal abuse!

Dairy DNA

Milk, it does a body good, and we want to make sure it stays that way. In order to help protect the safety of this ingredient found in so many foods, IBM and Cornell University are working on a way to monitor raw milk straight from the source. By sequencing the DNA and RNA of milk and its surrounding microbes, they hope to be able to instantly detect food safety hazards so they don’t have a chance to make it into your glass or onto your plate.

Learn more ->

Wow, this is the coolest comic i ever read! Got your book (”What if?”) and now think its the second coolest thing i read! :) Keep it up!

So pleasing for the eye to watch!

The Trefoil

(cf.)

This beef just got REAL!

NDT just murdered B.o.B.

This guy!

Big Brains. Small Films.  Benoît Mandelbrot, The Father of Fractals

In his final interview shot by filmmaker Errol Morris, Mandelbrot shares his love for math and how it led him to his wondrous discovery of fractals.

Damn, yes, why wouldn’t you! Looks great!

idk, why wouldn’t I make these and post them

Oh, so your from Denmark then, or maybe its “Skåne” ? :)

So I just finished my CALC 2 class with the highest marks in the class and I wanted to put together a “guide” on how to study for calculus. It doesn’t matter if you are taking AP Calculus or Calculus in college, this guide should be a general overview but I will mention some specifics to AP Calc. *Picture from my Calculus lecture. 

General Tips

Buy the AP CALC review books. Regardless of whether you are in college calculus or actually in AP Calculus, the review books are great in condensing materials and having good examples. 

Create your own cheat sheet. Every time you learn a new formula or theorem, write it down in a cheat sheet. This forces you to recall the information constantly.

Know your common derivatives and common integrals like the back of your hand.

Fundamental Theorem of Calculus, Part I & II? Yeah, it’s fundamental. Need to know that. 

Common limits? Yep, that too. 

Know your pre-calc and algebra by heart. The hardest thing about calculus is not the formulas and theorems, but recalling past materials to solve a problem. If you could easily recognize trigonometric identities, you would be well set for the class.

Know what trig graphs look like and what they approach, etc. 

Learn how to do the math without a calculator. Some professors don’t let you use calculators on the tests and when you are become too dependent on the calculator, you tend to forget how to do simple addition/subtraction and multiplication/division. Also, there is a non-calculator portion to the AP Calculus Exam, so don’t make your calculator your crutch.

Practice every day + do your homework. A little practice everyday goes a long way and doing your homework (even if it doesn’t count as a grade) can be a drastic way of improving your grades because chances are, your teacher knows you probably aren’t going to do the homework and will have test questions very similar to the homework questions. 

Show all your work. Write all the steps out. If you make a mistake mentally, your whole answer will be wrong. To decrease the chances of loosing points for careless errors, label everything, even if it tedious. Also, work shown can count towards partial credit on tests. 

Practice the problems from your textbook + problems outside your textbook.

Understand and review old tests. When you get your tests back, redo the whole test on another sheet of paper. Try to understand where you went wrong. Was it a simple math calculation error? Did you do the derivative wrong? Was the theorem wrong? Did you forget a step like checking for conditions to apply L’hopitals Rule or Alternating Series Test for Convergence? Whatever it is, go through the entire test (yes, even the ones you got right) and re-do it. 

Ask for help when you don’t understand something. Solving tough calculus problems are easier when working with a group on a white board because you get a fresh set of eyes and a new mindset/approach to a problem. If you cannot tackle a problem, regardless of how many ways you have tried, it’s best to ask someone who already knows how to do it. 

Resources for AP CALC

Buy review books. Honestly, this is self-explanatory. I usually would go with a Barron review book, but hey, what ever works with you. 

Do the previously released AP Calc exams. If you are a BC student, do the release exams for both AB and BC for more practice. 

Previously released AB Exams

Previously released BC Exams

Step-by-step explanations for free response questions release

AB Study Guide

Cheat Sheets + Other Resources

I advise you to print out the cheat sheets and place it in the front of your calculus binder/notebook or where it can be easily accessed. 

Cheat Sheets

AP Calculus Stuff You Must Know Cold 

This 2-page cheat sheet is honestly god gifted and I advise you to print it out and laminate or something and put it in the front of your calc binder/notes. Will definitely save your life. 

Algebra Cheat Sheet 

Trigonometric Cheat Sheet

Calculus Cheat Sheet

Derivatives and Limits

Integrals

Online Tutorials + Videos

Khan Academy

Differential Calculus

Integral Calculus

Paul’s Online Math Notes

HippoCampus

Online Calculators

Symbolab’s Calculus Calculator

The most beautiful thing to ever exist when you are checking your answers or looking for the steps on how to do a problem.

Don’t rely on it too much. Actually learn how to do it. 

Wolfram Alpha

Implicit Differentiation Calculator

Desmos Online Graphing Calculator

Bet you don’t know how to graph an x-function on that TI-84 without solving it out for y. But it’s cool, neither do I. That’s why I rely on Desmos’ Online Graphing Calculator.