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Unformatted text preview: Christoff Rudolff introduced in 1525. Fibonacci (1200) gave us the use of general letters in an argument. + and introduced by Johann Widman in 1489. Used as fullblooded operations by Vander Hoecke in 1514. = due to Robert Recorde in 1557. (Viete had used ; Descartes had used .) due to William Oughtred in early 1600s. Girard (1629) gave us 3 for cube root. Thomas Harriot introduced < and > . Newton used rational exponents. John Hudde (1657) used letter for positive and negative numbers. x 2 not standard until adopted by Gauss in 1801. Solving Polynomial Equations Subcategorizing equations of degree n Equations having negative numbers standing alone or with negative or complex solu tions werent treated for many years. For example, the quadratic equations solved in ancient and medieval time were of three types: x 2 + px = q x 2 = px + q x 2 + q = px Egyptians Had trouble solving quadratic equations.Had trouble solving quadratic equations....
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 Fall '10
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