why my graph is blank ?

a = 0.473e-3;
b = 636;
Eo = 1.12;
T = 300;

Eg = Eo-(a*(T^2)/(T+b));

t = 25:25:500;
Ega = 1.12-((0.473e-3)*(t.^2)/(t+636));
plot(t,Ega)

xlabel('temperature')
ylabel('energy band gap')
title('graph')

Eg

Answer 1

[madhan ravi]

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[Khor Chun Sheng]

omg thank you so much man really appreaciate it , ive been looking for the answers for so long

[Khor Chun Sheng]

thankss