how to develop function to calculate slope eficience

Hi, I'm a newbie here and I need help to develop a function to solve this question.

I Made this, but it does not work:

function [Pload,P2od] = eficiencia_incremental(rd,Rload,N2,CD,RD,f)
%Funcao para calcular enfiencia incremental do photodiodo
% com dependencia da frequencia
omega = 2*pi*f;
Pload=rd^2*Rload*N2^2;
P2od=(1i*omega*CD(RD+N2^2+Rload)+1)^2;  
end

The error

eficiencia_incremental(0.7,50,1,5*10^-12,1,60)
Index exceeds matrix dimensions.

Error in eficiencia_incremental (line 6)
P2od=(1i*omega*CD(RD+N2^2+Rload)+1)^2;

Answer 1

[Image Analyst]

CD is a scalar, not a vector. Perhaps you meant:

P2od = 1i * omega * CD * (RD + N2^2 + Rload) + 1) ^ 2;