Sensitivity Analysis for a ODE

I have a Differential equation of the form:

dW/dx=(Fch4(y,z)*(1+(KH2O*P0*ych40(y,z)*(theeta4(y,z)+(2*x)))))/(B(y,z)*(1-x))

KH20 and P0 are given constants.

I want to do sensitivity analysis for this for y and z and can't find anything on the internet to know how to. Please help me out.

Answer 1

[Jan]

Sensitivity means, that you vary the initial values or parameters by a small value and compare the results of the integration. Divide the difference between the varied and not varied final value by the size of the variation to obtain the sensitivity.