`[1] 19554.33`

`[1] 53911.93`

Exercise

The following function estimates the mass of an organism in kg based on its length in meters and a set of parameter values. For some types of dinosaurs we don’t have specific values of `a`

and `b`

, so we have to use general values that can be applied to a number of different species.

Rewrite this function so that its arguments have default values of `a = 39.9`

and `b = 2.6`

(the average values from Seebacher 2001).

- Use this function to estimate the mass of a Sauropoda (
`a = 214.44`

,`b = 1.46`

) that is 22 m long (by setting`a`

and`b`

when calling the function). - Use this function to estimate the mass of a dinosaur from an unknown taxonomic group that is 16m long. Only pass the function
`length`

, not`a`

and`b`

, so that the default values are used.

Output solution

`[1] 19554.33`

`[1] 53911.93`