Error using * Inner matrix dimensions must agree.

Hello everybody,

I keep getting this error:

Error using  * 
Inner matrix dimensions must agree.

Error in ECE_102_PROBLEM_1_PART_F (line 8) iS_1 = (I/2) + (I/Vov)*(Vd/2)*sqrt( (1) - ( (Vd/2) / Vov ) * ( (Vd/2) / Vov ) );

Here is my code:

I = 100 % I_D_M5 = 100 uA

Vov = 0.1 % Vov of M1 = Vov of M2 = 0.1 V

Vd = 0:0.1:10;

iS_1 = (I/2) + (I/Vov)*(Vd/2)*sqrt( (1) - ( (Vd/2) / Vov ) * ( (Vd/2) / Vov ) );

figure(); plot(Vd,iS_1,'LineWidth',2); legend('Initial Droop Curve' ,'Final Droop Curve'); title('iS1 vs. input differential voltage'); xlabel('Input Differential Voltage, Vd (Volts)'); ylabel('iS_1, (A)');

Answer 1

[Walter Roberson]

On that line change all the * to .*

[Ammar Babikir]

It still doesn't work. Gives me this:

Error using * Inner matrix dimensions must agree.

Error in ECE_102_PROBLEM_1_PART_F (line 7) iS_1 = (I/2) + (I/Vov)*(Vd/2)*sqrt( (1) - ( (Vd/2) / Vov ) .* ( (Vd/2) / Vov ) );

[Ammar Babikir]

Nevermind I forgot to change all of the * expressions.

It works now. Thank you.