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# How to do a reccurent substitution in a symbolic matrix in matlab withor the ''FOR'' loop?

## How to do a reccurent substitution in a symbolic matrix in matlab withor the ''FOR'' loop?

(OP)
Hi
I have this symbolic 2x2 matrix in Matlab. z is A Symbolic variable
k(z)= [ z+1, z^2; exp(z), z^3].
I need a value of k(z) for z=1:N

How to do this without a loop '' FOR''

Thanks

### RE: How to do a reccurent substitution in a symbolic matrix in matlab withor the ''FOR'' loop?

Obviously a homework question. you need to learn about the . modifier for arithmetical operations.
k =

2.0000 3.0000 4.0000 5.0000 6.0000 1.0000 4.0000 9.0000 16.0000 25.0000
2.7183 7.3891 20.0855 54.5982 148.4132 1.0000 8.0000 27.0000 64.0000 125.0000

for N=5. it's a 2 liner, no loops.

Cheers

Greg Locock

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### RE: How to do a reccurent substitution in a symbolic matrix in matlab withor the ''FOR'' loop?

(OP)
@Greg Locock
Honestly I did not get what you said
My problem here is not the answer but how to get k for each value of Z without the loop.
Kindly send me the code
Thanks
TEIF

### RE: How to do a reccurent substitution in a symbolic matrix in matlab withor the ''FOR'' loop?

Avoid using only "FOR" or any other loops at all? You can organize, for example, through "WHILE" ...

clc
clear
z=0
while z<10
z=z+1
k = [ z+1, z^2; exp(z), z^3]
kk(z,1)={k};
end

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