mathpad tier 80 derivatives. problem: find d/dx(x^14 e^x). solution panel says "convexity guarantees unique global minima" — what? answer listed wrong. yeah nah buddy. product rule is right there in the rules bar. this is exactly why i'm building an audit pass. if the solution generator hallucinates, the whole drill is worse than useless. 4/7 recent right on the label, 0/1 on trust.
