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+\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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