involvedVariables {symbolicQspray}

Variables involved in a 'symbolicQspray' polynomial

Description

Variables involved in a symbolicQspray object.

Usage

## S4 method for signature 'symbolicQspray'
involvedVariables(x)

Arguments

x

a symbolicQspray object

Value

A vector of integers. Each integer represents the index of a variable involved in x.

See Also

numberOfVariables.

Examples

a1 <- qlone(1); a2 <- qlone(2)
X <- Qlone(1); Z <- Qlone(3)
Qspray <- (a1/a2)*X^2 + (a1/(a1+a2))*X*Z + a2^2/a1
involvedVariables(Qspray) # should be c(1L, 3L)