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...family purchased potatoes on two occasions. On one occasion they bought 10 kg at 40p per kg, and on another they bought 6 kg at 45p per kg. We can use this formula to calculate the mean price (in pence per kg) that they paid for potatoes in that month. We have . begin 2 by 2 array q sub 1 =10 next column quantity next row p sub 1 = 40 next column price end array } first...

...History of complex integration The first significant steps in the development of real integration came in the seventeenth century with the work of a number of European mathematicians. Notable among this group was the French lawyer and mathematician Pierre de Fermat (1601–1665), who found areas under curves of the form y equals a times x super n , for n an integer...