You are considering whether to buy a product. You look at the reviews. Would the following review decrease or increase the chances of you buying the product?
Review title: worthless
Product review: I bought this DVD for a business math MBA class I am in that heavily uses differential calculus. I learned nothing from this DVD and I'm not sure how anyone could. Ok, it defined a derivative. It mentioned the chain rule. But there are five other rules needed to calculate most derivatives (constant function, power function, sums and differences rule, product rule, quotient rule). This did not show me how to look at the problem and know how to solve it. Luckily we've moved on to statistics in the class, so there's still hope of me passing it, but the calculus part was a disaster.
