Sea la función y (t )=Acos (2 πft+θ ), considerando la siguiente tabla y realizando sus graficas

A F θ y (t )=Acos (2 πft+θ )2 10 0 y1=2cos (2 π (10 )t )2 1 0 y2=2cos (2 π (1 ) t )1 2 π /2 y3=cos (2π (2 ) t+π /2 )1 2 −π /2 y4=cos (2 π (2 ) t−π /2 )

t=0:pi/1000:pi/5;y1=2*cos(2*pi*10*t);y2=2*cos(2*pi*1*t);y3=cos((2*pi*2*t)+pi/2);y4=cos((2*pi*2*t)-pi/2);plot(t,y1,'-.',t,y2,'--',t,y3,'-',t,y4,':')legend('y1','y2','y3','y4')

Sea la función x (n )=Acos (2π f n x )x=0:pi/100:2*pi;f1=31/60;f2=30/60;y1=cos(2*pi*f1*x);y2=cos(2*pi*f2*x);plot(x,y1,'o',x,y2,'-')legend('f1','f2')