This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1900 edition. Excerpt: ... CHAPTER XIV. SYNOPSIS OF SYMBOLS COMMONLY FOUND IN MATHEMATICAL FORMULAE. + Plus, or sign of addition. 5 + 7 = 12.--Minus, or sign of subtraction. 7--5 = 2. Plus or minus. 7 5 = 12 or 2. Difference sign. 5 7 = + 2. The difference between 5 and 7 is 2. Greater than. 7 5; seven is greater than five. ...
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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1900 edition. Excerpt: ... CHAPTER XIV. SYNOPSIS OF SYMBOLS COMMONLY FOUND IN MATHEMATICAL FORMULAE. + Plus, or sign of addition. 5 + 7 = 12.--Minus, or sign of subtraction. 7--5 = 2. Plus or minus. 7 5 = 12 or 2. Difference sign. 5 7 = + 2. The difference between 5 and 7 is 2. Greater than. 7 5; seven is greater than five. Less than. 5 7; five is less than seven. = Equality. 5 + 7 = 12. 4= Inequality. 5 = 7; five is not equal to seven: or, 7 and 5 are unequal. (2). = Identity. 2(a + b) = 2a+2b; both members invariably identically equal. = Equality or Superiority. /'= 30; f greater than or equal to 30. Equality or Inferiority. / = 30; f less than or equal to 30. Nearly equal to. 0.667 1. x Multiplication. 5 x 7 = 35.. Multiplication, a. b = a x b = ab. + Division. 3-4 = 0.75.--Division bar.-r = 3--4 = 0.75. / Division solidus. 3/4 = 3 + 4 = 0.75. -J Brackets or Parentheses. 5(6+7) f = 5j6 + 7f=56 + 7 = 5 x13. 11/ n, 1 v, nth Root, v a--a" = nth root of a.! or L, Factorial. 7! = 7x6x5x4x 3x2X1. 2, Summation. 2(abc) = sum of all terms of the type abc.-r-, /i ix-r. Circumference n, ri (Greek). Ratio--=jy r----= 3.14159 log,0 x, Common Logarithm of x. logi0 100 = 2.000. log, x, or hyp. log. x, Naperian Logarithm of x. log, 100 = 4.6052. iorj, Sign of the imaginary. i=j--f(x) Function of x. x2, V2, log x, ax, are functions of x denotable by f(x). sin a, Sine of angle a. Perpendicular-r hypothenuse. cos a, Cosine of angle a. Base-s-hypothenuse.' tan a, Tangent of angle a. Perpendicular-7-base. cot a, Cotangent of angle a. Reciprocal of tangent. sec a, Secant of angle a. Reciprocal of cosine. cosec a, Cosecant of angle a. Reciprocal of sine. vers a, Versed sine of angle a. 1--cos a. sin-1 a, Inverse sine. The angle whose sine is alpha. sinh a, ...
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