getdu2da {ROSeq} | R Documentation

## Finds the first derivative of u2 with respect to a. This first derivative is evaluated at the optimal (a_hat, b_hat).

### Description

u1, v and u2 constitute the equations required for evaluating the first and second order derivatives of A with respect to parameters a and b

### Usage

    getdu2da(coefficients, r)

### Arguments

`coefficients` | the optimal values of a and b
`r` | the rank vector

### Value

du2da

[Package ROSeq version 1.6.0 Index]