Can anyone show code for this please?

[Ned Williams]

the week 4 lecture example is pretty pointless. I have looked at it and it did not really help.

[Turlough Hughes]

Ned, you can solve this with the following operators

* + .^ :

along with

doc sin
doc plot

[Wan Ji]

Is this your homework?

g = @(t) 100*sin(t+t.^2);
f = @(t) (t>=0).*(-3*t.^2+5) + (t<0).*(3*t.^2+5);
t = -9:0.1:9;
y = [g(t); f(t)];
plot(t,y); legend('g(t)','f(t)')

[Ned Williams]

@Wan Ji yes it is