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CONCAVE: A curve that is 'bowed-in' toward the origin, like entering a cave. Technically speaking, the slope of a concave curve decreases from left to right as the X-axis variable increases.

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MARGINAL REVENUE, PERFECT COMPETITION

The change in total revenue resulting from a change in the quantity of output sold. Marginal revenue indicates how much extra revenue a perfectly competitive firm receives for selling an extra unit of output. It is found by dividing the change in total revenue by the change in the quantity of output. Marginal revenue is the slope of the total revenue curve and is one of two revenue concepts derived from total revenue. The other is average revenue. To maximize profit, a perfectly competitive firm equates marginal revenue and marginal cost.

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APLS

BLACK DISMALAPOD
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Today, you are likely to spend a great deal of time at a garage sale looking to buy either a T-shirt commemorating next Thursday or a birthday gift for your uncle. Be on the lookout for attractive cable television service repair people.
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Rosemary, long associated with remembrance, was worn as wreaths by students in ancient Greece during exams.
"After climbing a great hill, one finds many more hills to climb. "

-- Nelson Mandela, president of South Africa

WLLN
Weak Law of Large Numbers
A PEDestrian's Guide
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