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Solution to Exercise 6.1

12 October, 2015 - 11:34

1. Plotting:

  1. Plotting:  
    x=-pi:pi/100:pi;
    y=cos(x);
    plot(x,y),title('Graph of y=cos(x)'),xlabel('x'),ylabel('y'),grid

     
  2. Area calculation 1:  
        » x=0:pi/10:pi/2;
    » y=cos(x);
    » area1=trapz(x,y)
     
    area1 =
     
        0.9918

     
  3. Area calculation 2:  
        » x=-pi:pi/1000:pi/2;
    » y=cos(x);
    » area2=trapz(x,y)
    
    area2 =
    
        1.0000