Triangle, sawtooth plot

Hello, how to write these formulas in screenshot for plotting. As I understand I have to get triangle and sawtooth wave plots, but i am not getting that: The code I use:

f = 1

t=0:0.01:5;

y = 4|F*t-[floor(F*t+1/2)]|-1;

plot(t,y)

f = 0.2

t=0:0.01:5;

y = 2*((F*t))%1/2))f-1;

plot(t,y)

Answer 1

[VBBV]

f = 1

f = 1

t=0:0.01:5;

y = 4*abs(f*t-[floor(f*t+1/2)])-1;
plot(t,y)

f = 0.2

f = 0.2000

t= 0:0.01:5;
y = 2*(mod((f*t),1/2))*f - 1;
plot(t,y,'linewidth',2);  

[Ruslanas Kryzanauskas]

cheers mate!