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| Page 53 Yes there is. Because a perfectly elastic demand curve is horizontal, it has a zero slope. Similarly, a perfectly inelastic demand curve is vertical, so it has an infinite slope. Page 62 Negative. This is because a long run expansion in production would lead to a lower per-unit cost, allowing a fall in price at higher quantity levels. But as some businesses get larger, they gain a competitive advantage over smaller rivals, which makes a perfectly competitive market structure very unlikely. Page 70 They do so by charging those who wish to acquire addresses on the Internet. |