Although the Lagrange multiplier rule to solve the variational problem ofLagrange has already been presented,the proof of the rule is very difficult:“The proofof some problems wants quite deep mathematical methods”(...Although the Lagrange multiplier rule to solve the variational problem ofLagrange has already been presented,the proof of the rule is very difficult:“The proofof some problems wants quite deep mathematical methods”(See references [2] and [1]).This paper presents a mathematically analytic demonstration which is very simple,compared with those described in the references mentioned above.展开更多
文摘Although the Lagrange multiplier rule to solve the variational problem ofLagrange has already been presented,the proof of the rule is very difficult:“The proofof some problems wants quite deep mathematical methods”(See references [2] and [1]).This paper presents a mathematically analytic demonstration which is very simple,compared with those described in the references mentioned above.