Question Number 65277 by mr W last updated on 27/Jul/19
Commented by mr W last updated on 27/Jul/19
$$\left({see}\:{also}\:{Q}\mathrm{64823}\right) \\ $$$${the}\:{question}\:{is}\:{changed}\:{to}: \\ $$$${find}\:{u}\:{in}\:{terms}\:{of}\:\theta.\:{how}\:{large}\:{is}\:\theta \\ $$$${such}\:{that}\:{u}\:{is}\:{minimum}? \\ $$