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-rw-r--r--man/ipowfunc.Rd33
-rw-r--r--man/powfunc.Rd32
2 files changed, 65 insertions, 0 deletions
diff --git a/man/ipowfunc.Rd b/man/ipowfunc.Rd
new file mode 100644
index 0000000..c0f946b
--- /dev/null
+++ b/man/ipowfunc.Rd
@@ -0,0 +1,33 @@
+\name{ipowfunc}
+\alias{ipowfunc}
+\title{Power function}
+\description{
+ Inverse of the arithmetic power function \code{\link{powfunc}} used for
+ modelling univariate nonlinear calibration data. }
+\usage{
+ powfunc(x,a,b)
+}
+\arguments{
+ \item{x}{
+ Independent variable}
+ \item{a}{
+ Coefficient}
+ \item{b}{
+ Exponent}
+}
+\value{
+ The result of evaluating the function
+ \deqn{f(x) = \frac{y}{a}^\frac{1}{b}}{f(x) = y/a^1/b}
+ which is the inverse of the function defined by \code{\link{powfunc}}
+}
+\author{
+ Johannes Ranke
+ \email{jranke@uni-bremen.de}
+ \url{http://www.uft.uni-bremen.de/chemie/ranke}
+}
+\seealso{
+ The original function \code{\link{powfunc}}.
+}
+\keyword{models}
+\keyword{regression}
+\keyword{nonlinear}
diff --git a/man/powfunc.Rd b/man/powfunc.Rd
new file mode 100644
index 0000000..73fe3b0
--- /dev/null
+++ b/man/powfunc.Rd
@@ -0,0 +1,32 @@
+\name{powfunc}
+\alias{powfunc}
+\title{Power function}
+\description{
+ Arithmetic power function for modelling univariate nonlinear calibration data.
+}
+\usage{
+ powfunc(x,a,b)
+}
+\arguments{
+ \item{x}{
+ Independent variable}
+ \item{a}{
+ Coefficient}
+ \item{b}{
+ Exponent}
+}
+\value{
+ The result of evaluating the function
+ \deqn{f(x) = a x^b}{f(x) = a * x^b}
+}
+\author{
+ Johannes Ranke
+ \email{jranke@uni-bremen.de}
+ \url{http://www.uft.uni-bremen.de/chemie/ranke}
+}
+\seealso{
+ The inverse of this function \code{\link{ipowfunc}}.
+}
+\keyword{models}
+\keyword{regression}
+\keyword{nonlinear}

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