« first day (3864 days earlier)      last day (630 days later) » 

BAYMAX
BAYMAX
3:29 AM
A[{1,n},{1,n}]
What does this mean for a square matrix $A$ of size $n \times n$ ?
Is it taking the first row and first column?
am confused witht he syntax?
 
 
4 hours later…
Nasser
Nasser
7:45 AM
@BAYMAX This syntax is bit confusing., I never used it. btw, it should be
A[[{1,n},{1,n}]] not as you wrote A[{1,n},{1,n}]. But you can see what it does by inspection.
 
BAYMAX
BAYMAX
Nice! thank you@Nasser , that was much clear yes I should have used A[[..]]
 
Nasser
Nasser
Ok, glad it helps. I never used it before actually myself. good to know one can use it.
Overall, I find Matlab matrix syntax the best. It is easier to understand. easier than Maple, Mathematica, Julia, Python, etc... THis is because Matlab was originally designed for matrices.
 
BAYMAX
BAYMAX
8:17 AM
Yes
but the symbolic expressions in mathematica are ncier
I use MATLAB mosly and hence perhaps find the syntax in Mathematica tricky
 

« first day (3864 days earlier)      last day (630 days later) »