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diff --git a/716/CH2/EX2.4.a/Solved_Ex2_4a.sce b/716/CH2/EX2.4.a/Solved_Ex2_4a.sce
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+//find power and energy of periodic signal x(t)=exp(-2t)*u(t)
+clc;
+//To plot signal*************************//
+t=-5:0.01:5;
+x=exp(-2*t).*(t>=0);//given signal
+plot(t,x);
+//**************************************//
+t=-50:0.01:50;
+x=exp(-2*t).*(t>=0);
+T=length(t);
+
+//To calculate Energy
+xsq=x.^2;//adds squares of all the 'x' values(integrates 'x^2' terms) 
+v=inttrap(t,xsq);
+disp('joules',v,'Energy');
+
+//To calculate Power 
+xsq=x.^2;
+P=1/T*v;//divide by 2T,to take the average rate of energy(gives power)
+disp('watts',P,'Power=');
+\ No newline at end of file