# Gateaux derivative of one functional

by fenglingchao
Tags: derivative, functional, gateaux
 P: 1 The functional is given as follows, $\phi(\theta)(t)=t\cdot \theta (t^{1/(I-1)})$ where $I\geq 2$ is a constant. We need to get the gateaux derivative of the functional $\phi$. Thanks.