MAT LAB PROGRAM'S PART2

Program to plot the curve for equation y=sin(x)+cos(x) as x varies from 0 to 2*pi

x=0:10:340;

y=sind(x)+cosd(x);

plot (x,y);

xlabel('angle in degree');

ylabel('magnitude');

title('curve for the equation y=sin(x)+cos(x)');

program to generate two sinusoids and computation of their product

t=0:0.001:0.1; f1=input('enter the freq of first sinusoid'); f2=input('enter the freq of second sinusoid'); y1=sin(2*pi*f1*t); y2=sin(2*pi*f2*t); y=y1.*y2; p1=fft(y1); p2=fft(y2); p3=fft(y); subplot(2,2,1) plot(y1) xlabel('time'); ylabel('amplitude'); title('first sinusoid in time domain'); subplot(2,2,2) plot(y2) xlabel('time'); ylabel('amplitude'); title('second sinusoid in time domain'); subplot(2,2,3) plot(abs(p1)) xlabel('time'); ylabel('magnitude'); title('first sinusoid in freq domain');

subplot(2,2,4) plot(abs(p2)) xlabel('time'); ylabel('magnitude'); title('second sinusoid in freq domain'); figure,subplot(2,1,1) plot(y1) xlabel('time'); ylabel('amplitude'); title('product of two sinusoids in time domain'); subplot(2,1,2) plot(abs(p3)) xlabel('time'); ylabel('amplitude'); title('product of two sinusoids in freq domain');