plotting several quadratic functions

would like to plot 3 to 4 qaudratic functions (a*x^2+1) on the same coordinates by changing the value of a from -1:1:2. can i use the for loop for this? many thanks

Answer 1

[Grzegorz Knor]

Yes, I think that it is good idea:

figure
hold all
x = linspace(0,1);
for a=-1:1:2
    plot(x,a*x.^2+1)    
end
hold off
legend('a=-1','a=0','a=1','a=2')

[ahmed-wali]

great many thanks

Answer 2

[Dr]

figure

hold all

x = linspace(0,1);

for a=-1:1:2

plot(x,a*x.^2+1)

end

hold off

legend('a=-1','a=0','a=1','a=2')