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% hw1.m
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% solutions to HW 1 for Matlab Bootcamp class
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% k.drushka
% sept 2013
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% 1.	Create v1, a 4x1 column vector that contains any values you like. 
v1=[2 4.4 99 -100];
% 2.	Create v2, a 1x6 vector containing the values from 20 to 25. 
v2=20:25;
% 3.	Create v3, a 1x6 vector whose values are equal to 5 times the values in v2. 
v3=v2*5;
% 4.	Create a new figure. Make sure it is cleared of any previous plots. Plot v3 against v2 as a red dotted line with square markers. (Type help plot or do an internet search for ?Matlab line specification? to get some hints on plotting lines with different properties).
figure(1);   % use figure 1
clf          % clear the figure
plot(v2,v3,'r:s')    % 'r' plots in red   ':' makes a dotted line   's' makes a square marker
% 5.	Create v4, a vector that goes from -2? to +2? containing at least 100 datapoints (i.e. the length of v4 should be at least 100).
v4=-2*pi:0.01:2*pi;   
length(v4)     % check the length of v4 to make sure it's at least 100 (the output will print to the screen)
% 6.	Create v5, a vector equal to the cosine of v4 plus some nonzero offset (mean). 
v5=cos(v4)+1.1;
% 7.	Without erasing the figure, now v5 against v4. 
hold on
plot(v4,v5)
hold off
% 8.	Save your figure as a pdf.
print('-dpdf','hw1_plot');