Rayleigh's inflection-point theorem
= Rayleigh's inflection-point theorem
{c}
An inviscid parallel shear flow can possess an exponentially growing normal mode only if $U''$ changes sign somewhere in the flow.
= Rayleigh's inflection-point theorem
{c}
An inviscid parallel shear flow can possess an exponentially growing normal mode only if $U''$ changes sign somewhere in the flow.