Write a Phineas and Ferb–style episode titled “The Triple-D.” Candace struggles with derivatives ...

Write a Phineas and Ferb–style episode titled “The Triple-D.” Candace struggles with derivatives while studying, and Phineas overhears and decides to help by building the Derivative Demonstration Device, a machine that visually explains rates of change, slopes, and basic differentiation rules. Isabella, Baljeet, and Buford react in classic fashion. Meanwhile, Perry battles Dr. Doofenshmirtz, who creates a Derivative-Eliminator-Inator to erase calculus from Danville. Both machines malfunction and