# Unimodal function

### From Glossary

Has one mode (usually a maximum, but could mean a minimum, depending on context). If f is defined on the interval let be its mode. Then, strictly increases from to and strictly decreases from to (reverse the monotonicity on each side of if the mode is a minimum). (For line search methods, like fibonacci, the mode could occur in an interval, where strictly increases from to is constant (at its global max value) on then strictly decreases on )