I'm trying to plot this graph with the x-values between -10 and 50, but the graph plots them between 0 and 60?

a = bin2dec('00010101') b = bin2dec('00010010') c = bin2dec('11000101')

x =[(-10):1:50]

y1 = (-b.*((x-a).^2))+c y2 = (c.*x)-a

hold on plot (y1) plot (y2)

Answer 1

[Jan]

a = bin2dec('00010101');
b = bin2dec('00010010');
c = bin2dec('11000101')
x = -10:50;  % Nicer and faster than: [(-10):1:50]
y1 = (-b.*((x-a).^2))+c;
y2 = (c.*x)-a;
plot(x, y1);
hold on
plot(x, y2);

You need to specify x in the plot() command, otherwise Matlab assumes it is 1:length(y).

See http://www.mathworks.com/matlabcentral/answers/35676-why-not-use-square-brackets for the unneeded square brackets.