I need help graphing these simple functions. I keep getting a blank graph

Question: Plot the maximum power absorbed in a resistor if the voltage across the resistor. Equations: v= (r/(r+100))*10 p= (v*(r)^2)/r

r=linspace(0,100,101);

v=(r/(r+100))*10;

p=(v*(r).^2)/r;

grid

plot(r,p);

Answer 1

[David Hill]

Need a few more dots.

r=linspace(0,100,101);
v=(r./(r+100))*10;
p=(v.*(r).^2)./r;
grid
plot(r,p);

Answer 2

[Torsten]

Replace all matrix divisions (/) by elementwise divisions (./).