When you've applied L'Hôpital's rule but the limit is still giving you nightmares... Time for the fifth derivative! For the uninitiated, L'Hôpital's rule is that magical calculus trick that lets you solve indeterminate forms (like 0/0 or ∞/∞) by taking derivatives of both numerator and denominator. But sometimes, just like stubborn political problems, one application isn't enough—and you find yourself differentiating until your pencil breaks. The desperation in asking for "differential support" is the mathematical equivalent of calling your professor at 2AM before the exam. We've all been there, frantically writing derivatives while muttering "this has to work eventually..."