Hi,

I have recently learned about the functions expFit and logisticFit however when I try to use them on Rstudio they are not recognised.

Examples:

plot(time,mv)

expFit (time, mv, xlab = “Years Since 2000”, ylab = “Number of Motor Vehicles”)

logisticFit (time, mv, xlab = “Years Since 2000”, ylab = “Number of Motor Vehicles”)

Any tips will be much appreciated.

Many thanks