This black t-shirt features a humorous math-themed graphic. The design includes white text showing "F(X) =" accompanied by a cartoon potato with an expressive face. Below, it reads "F'(X) =" followed by an image of french fries in a red container. The shirt is made from what appears to be a soft, comfortable fabric. Perfect for math enthusiasts with a sense of humor or anyone who loves potatoes and fries. Wear it casually or to spark conversations!