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diff --git a/3812/CH1/EX1.36.f/1_36_f.sce b/3812/CH1/EX1.36.f/1_36_f.sce
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+//Example 1.36<f>

+//Find whether the given signal is causal or not y(n)=x(n^2).

+clear all;

+clc;	

+n=-10:10;

+for i=1:length (n)

+x(i)=i;

+y(i)=(i.^2) ;

+end

+causal=%t;

+for i=1: length (n)

+if n(i)<0 &y(i)~=0 then

+causal=%f;

+end

+end

+disp(causal,"The statement that the system is causal is:");