Basically, try to devise a loop where each variable is calculated and then placed into its respective slot in the matrix. For example, a loop will add a number to x and y, calculate all associated variables, store resulting data in (x,y), and repeat until a defined end.

I am absolutely sure there is a routine for this, but again I am not familiar with Nspire.

Hope this helps!

]]>I've read that Wikipedia page many times over the past few years, but what you are doing looks so different!

]]>I'm really new with this calculator (TI Nspire cx cas) and i'm trying to do a program to get new iterated values in finite element analysis method, newton raphson method, dunno if anyone know.

Basically, i give a R (Residue), and two values (theta1, theta2) and a want to get 2 new theta1 and theta2.

I've done myself the initial part of the program but now i'm stucked.

`Define LibPub nr(r1,r2,theta1,theta2)= Prgm :Disp r=[[r1][r2]] :Disp j=[[(r1,x),(r1,y)][(r2,x),(r2,y)]] :x=theta1 :y=theta2 :Disp iteration=[[x][y]]-[j]^(-1)*r :EndPrgm`

Basically after i derivate de "j" matrix i dont know how to tell the program to change the x and y values on this matrix to the values i give initially.

I hope you guys understand and can help me on this,

Cumps,

João Sousa

P.S: Those weird symbols that appear are the derivate of the r1 in terms of x.

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