# Pollution level model

- Author:
- Juan Carlos Ponce Campuzano

- Topic:
- Calculus

The pollution level along a straight road between factories A and B, which are 10 km apart, is given by
where , where is the distance from Factory A, and and are positive constants. On Pi Day (March 14)
the values of and are measured to be 9 and 4 respectively.

a) Determine the value of at which the pollution level is at a minimum.