Plot as not expected

Hello

Can anybody please help me?

I am trying to plot 3 functions. I expect to see sine periodic in negative x and exponential in positive x, but matlab ignores cos.

here is my code:

t = -10:0.01:10;

A=-0.6*(cos(t)+2.*sin(t))+((-0.5+0.6)*exp(2*t));

B=-0.6*(cos(t)+2.*sin(t))+((-0.6+0.6)*exp(2*t));

C=-0.6.*(cos(t)+2.*sin(t))+((-0.7+0.6).*exp(2.*t));

plot(t, A)

hold on

plot(t, B)

plot(t, C)

grid on

Thank you

Kindest regards

Here is what I expect to see

Answer 1

[Star Strider]

None of them are being ignored. The current y-axis limits are so large that the red line ‘C’ appears as a straight line.

Use:

ylim ([-1 1]*20)

to see all of them clearly. The complete code is then:

t = -10:0.01:10;
A=-0.6*(cos(t)+2.*sin(t))+((-0.5+0.6)*exp(2*t));
B=-0.6*(cos(t)+2.*sin(t))+((-0.6+0.6)*exp(2*t));
C=-0.6.*(cos(t)+2.*sin(t))+((-0.7+0.6).*exp(2.*t));

figure
plot(t, A)
hold on
plot(t, B)
plot(t, C)
grid on
ylim ([-1 1]*20)

producing:

.

[Ra Karamislo]

Thank you very much

[Star Strider]

As always, my pleasure!