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Compute a geomtric series with matrices 
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#1
Feb2506, 02:29 PM

P: 284

Hi ,
I want to compute a geomtric series with matrices. I have the following functions: add (matrix1,matix2)=function to add 2 matrices. mult(matirx1,matrix2) =function to multiply two matrices. I want to create this function in C that computes the following. I(indentity matrix) I+A+A^2+A^3+....A^k I tried sum=I; for(i=0;i<k;i++) { intermediary=mult(I,A); sum+=intermediary; intermediary=mult(intermediary,A) } Am I right? Please, What is wrong here? Thank you for yout help B 


#2
Feb2506, 03:10 PM

P: 646

//This should have been the code
sum=I; intermediary = I; for(i=0;i<k;i++) { intermediary=mult(intermediary,A) sum+=intermediary; } Now what was wrong in your code? sum=I; for(i=0;i<k;i++) { intermediary=mult(I,A); < Look at this, intermediary is set to IxA everytime here sum+=intermediary; intermediary=mult(intermediary,A) }  AI 


#3
Feb2506, 04:57 PM

P: 284

thanks a lot. 


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