Nonlinear cost function

Nonlinear cost function is cost function in which the graph of total costs based on the level of a single activity is not a straight line within the relevant range.

Definitions

According to Cost Accounting by Horngren, Datar, Rajan (14th edition),

Nonlinear cost function. Cost function in which the graph of total costs based on the level of a single activity is not a straight line within the relevant range.