Algebra Self-taught

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E. & F. N. Spon, 1876 - 104 sider
 

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Side 64 - To divide one fraction by another, invert the ' divisor, and proceed as in multiplication.
Side 76 - IN ARITHMETICAL PROPORTION THE SUM OF THE EXTREMES is EQUAL TO THE SUM OF THE MEANS. 24. GEOMETRICAL' PROPORTION is AN EQUALITY OF GEOMETRICAL RATIOS, AND ARITHMETICAL PROPORTION AN EQUALITY OF ARITHMETICAL RATIOS.
Side 61 - To divide a polynomial by a monomial, divide each term of the polynomial by the monomial: (Sab — 12ac) -i- 4a = 36 — 3c.
Side 35 - There is no moral element, for example, in the conviction we have that things equal to the same thing are equal to one another.
Side 77 - The sum of a series of quantities in arithmetical progression is found by multiplying the sum of the first and last terms by half the number of terms.

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