Octave half wave avg

clc;
warning("off","all")
syms x t Vp
y1=(1/(2*pi))*int(1*sin(x),0,pi);
y2=(1/(2*pi))*int(Vp*sin(x),0,pi);
y3=(Vp/(2*pi))*int(1*sin(x),0,pi);
double(y1);
y4=double(y1)*sqrt(2);
disp(y4);

y5=(1/(1*pi))*int(sin(x),0,pi);
double(y5);

y6=sqrt((1/(2*pi))*int((sin(x))^2,0,pi));
double(y6)