comparison.sagews

This file is a Sage worksheet. It behaves similarly to a Jupyter worksheet, in that it is divided into cells that can be individually executed by typing Shift-Enter. One difference is that it is possible to specify a different programming language for each cell, as illustrated by this worksheet. See the homework notebook 2018-01-19.ipynb for additional instructions.

Here is an example of arrays in Octave, an open-source system which emulates the syntax of MATLAB. We will compare linear-algebra functionality between MATLAB and Sage later.

%octave
a = [1,2,3];
b = a;
b(1) = 5;
a
b

a = 1 2 3 b = 5 2 3

Here is an example of arrays in R, an open-source system for statistics which we will study later.

%r
a <- c(1,2,3);
b <- a;
b[1] = 5;
a
b

1. 1
2. 2
3. 3

1. 5
2. 2
3. 3

Here is an example of arrays in Javascript (for comparison only; we will not study this language further).

%javascript
a = [1,2,3];
b = a;
b[0] = 5;
print("a =",a)
print("b =",b)

Here is an example of arrays in Julia, a new language for scientific computing which we will study later.

%julia
a = [1,2,3];
b = a;
b[1] = 5;
println("a =", a, "\nb =", b);

a =[5, 2, 3] b =[5, 2, 3]