I’ve mentioned that one of the courses I’m following currently is Keith Devlin’s Introduction to Mathematical Thinking on Coursera. Maths is something I was never interested in and never considered myself to be ‘good’ at (hence this blog’s tongue-in-cheek name). Getting yourself out of a mentality where you’ve convinced yourself you’re weak at something or…
Relational algebra is a procedural query language for the relational model. Generally, relational algebra is not visible at the user interface level, but it is used in almost all RDBMS to represent queries internally for query optimisation and execution. RA consists of a set of operations which take one or two relations as input and…
Completed: 80/140 pages of Code Mathematics 1 textbook (The first of 6 *weep weep*) 3 units of Udacity’s Introduction to Computer Science course (Including optional assignments) Began Introduction to Mathematical Thinking on Coursera (Ongoing) Heckuva lot of Khan Academy Upcoming: More maths. Always more maths. Forging ever onwards with the winning combination of Introduction to…
The second challenge of Lesson 3: Problem Set (Optional) of Udacity’s Introduction to Computer Science. I think this is a relatively good solution and it didn’t take long. The process is similar to the exercise in my previous post, where we check whether the solution of a simple sudoku game is correct. However, this exercise…
After a week of maths, I’ve headed on to the Lessons 3 Problem Set over on Udacity’s Introduction to Computer Science. Although I got somewhat stuck on the logic a few times, the whole thing went relatively smoothly. I’m not terribly happy with the inelegance of the resulting code (particular the if clauses), but there’s…
This is pretty old school. The colour-coding is purportedly for clarity, but really just for kicks. In general, the equation of a straight line can be written y = mx +c where m is the gradient. Else, it can be written ax + by + c = 0 where a, b and c are integers.…
This video is the best source I’ve found for finding the equation of a quadratic function when all you have are a few co-ordinates on the graph of the function.
You can transform the curve of a function f(x) by simple translations of the form: Shoving the whole curve left, right, up or down along the axes: f(x+a) = subtract a from the horizontal / f(x-a) = add a to the horizontal f(x)+a = add a to the vertical / f(x)-a = subtract a from…
My god-forsaken maths textbook (no names named, but it starts with Edex and rhymes with bell) consistently throws problems at me seemingly with no prior explanation of how they should be solved. Sometimes I’ve had to go back through as many as 20 pages to find which techniques supposedly should be used. If this were…
How awesome is this Programmer Competency Matrix by Sijin Joseph? For anybody looking to grade their skills and/or identify specific areas to work towards, this is gold.
Terrible at Maths 