Grocery-prices Memes

The student who thought calculus was useless just got schooled by real life! The headline perfectly captures the concept of derivatives vs. absolute values. When inflation falls , it doesn't mean prices go down—it means they're still going up, just more slowly! This is exactly what calculus teaches us: the rate of change (derivative) can be negative while the actual value remains positive. That student is probably kicking themselves now for not paying attention during those derivative lectures. Next time someone says "when will I use this in real life?" just point to your grocery bill!