Definite integral of two arrays with 400 values each.

Hello

I have to calculate S/P ratio by this formula. The problem is that i have no idea how to itegrate it. S, V and V' are arrays with 400 values, for example V = [2e-4 2.2821e-4 2.6109e-4 2.9936e-4 ... 1.499e-5]. K'm and K are constants. Lower limit of the integral is 380 and upper is 480.

Answer 1

[Matt J]

I would imagine you have a vector of 400 lambda values as well. Then you could do,

numerator=trapz(lambda, S.*Vprime);
denominator=trapz(lambda, S.*V);

ratio=numerator/denominator*(Kmprime/Km)

[Martin Fertal]

Yes that's exatly what i need. Thak you, it helped me a lot.