overwrite figure(2) on figure(1)

MatLab open all the figure except for the number 2 and I can't understand why. In fact if I use:

figure
fplot(f,[-pi,pi])
figure
fplot(g)

it plot the first one in figure(1) and the second one in figure(3). If I would use this code it will overwrite on figure(1).

figure(1)
fplot(f,[-pi,pi])
%
figure(2)
fplot(g)

Answer 1

[Star Strider]

I am not certain what you are asking. Consider using the hold function to plot two figures on the same axes —

syms x 
f = sin(x);
g = cos(x);

figure
fplot(f, [-pi pi], 'DisplayName','sin(x)')
hold on
fplot(g, [-pi pi], 'DisplayName','cos(x)')
hold off
grid
legend('Location','best')

.