Key to System of practical mathematics. 2 pt. No.xvii |
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Página 8
... evidently divisible by b , or ( x - a ) , without a remainder . ART . 39 . In order to demonstrate this theorem generally , put x + a = s , then x = s — a , and x ” —a ” , will = s ” —nsn ― 1a + a " -a " , where the last term of the n ...
... evidently divisible by b , or ( x - a ) , without a remainder . ART . 39 . In order to demonstrate this theorem generally , put x + a = s , then x = s — a , and x ” —a ” , will = s ” —nsn ― 1a + a " -a " , where the last term of the n ...
Página 36
... evidently inconsistent with the na- ture of the problem . 8. Let x = the first ; then since the sum of the first and second is 10 , the second will be ( 10 - x ) ; again , since they are in geometrical progression , x : ( 10 — x ) ...
... evidently inconsistent with the na- ture of the problem . 8. Let x = the first ; then since the sum of the first and second is 10 , the second will be ( 10 - x ) ; again , since they are in geometrical progression , x : ( 10 — x ) ...
Página 70
... evidently equiangular , and AE is EB , .. EH is EK , and hence IF is IG . But ( Prop . 46 ) ID is IC , .. the remainder , DF , is = CG . 20. Let ABD be a circle , of which AB is the diameter , and CD a chord parallel to AB , it is ...
... evidently equiangular , and AE is EB , .. EH is EK , and hence IF is IG . But ( Prop . 46 ) ID is IC , .. the remainder , DF , is = CG . 20. Let ABD be a circle , of which AB is the diameter , and CD a chord parallel to AB , it is ...
Página 71
... evidently equiangular , FA : AC = ED : DC , ( Prop . 61 ) , and since FA is DC . = BA , .. BA : AC = ED : Q. E. D. 23. Let ABC be a circle , and ADE another , described on the radius of the former as its diameter ; any chord AB drawn in ...
... evidently equiangular , FA : AC = ED : DC , ( Prop . 61 ) , and since FA is DC . = BA , .. BA : AC = ED : Q. E. D. 23. Let ABC be a circle , and ADE another , described on the radius of the former as its diameter ; any chord AB drawn in ...
Página 83
... ac + bc c2 + ac + bc Hence a + b + c is the greatest common measure sought , and might have been discovered by inspection from the remark on Question 23d ; for the numerator is evidently KEY - EXERCISES IN ALGEBRA . 83.
... ac + bc c2 + ac + bc Hence a + b + c is the greatest common measure sought , and might have been discovered by inspection from the remark on Question 23d ; for the numerator is evidently KEY - EXERCISES IN ALGEBRA . 83.
Términos y frases comunes
a+b+c AABC ABCD acres base binomial theorem bisected centre changing the signs chord circle circumference coefficients collecting the terms completing the square cosec denominator diameter difference distance dividing divisor equal extracting the root feet find the area find the differential fraction given equation gives greater segment half the sum height hence the area hypotenuse inches inverted latitude least common multiple Let ABC Log.cosec logarithm miles Mult Multiply number sought perp perpendicular poles Problem XI Prop question radius rectangle semiperimeter sine slant slant height solidity square root substituting Subt Subtract surf Tabular area tangent Theorem third side transp transposing transposition triangle Trig value of x wherefore whole arc whole surface yards دو
Pasajes populares
Página 74 - If two triangles have two angles of the one equal to two angles of the other, each to each, and one side equal to one side, viz.
Página 75 - If the vertical angle of a triangle be 'bisected 'by a straight line which also cuts the base, the rectangle contained by the sides of the triangle is equal to the rectangle contained by the segments of the base, together with the square on the straight line which bisects the angle.
Página 9 - Let x measure у by the units in n, then it will measure cy by the units in nc. 2d. If a quantity measure two others, it will measure their sum or difference. Let a be contained...
Página 15 - ... sin(a + b + c). Again (a) represents the coarse ROM, and bands b and c are two controls of the fine-tuned ROMs so that a < 90°, b < 90 • 2~a and c < 90 • 2~(a + 6). This is shown in Fig. 7-7. Sunderland showed that the trigonometric identity can be written as sin(a + b + c) = sin(a + 6) cos c + cos a cos b sin...
Página 10 - The truth of this rule depends upon these two principles ; 1". If one quantity measure another, it will also measure any multiple of that quantity. Let x measure y by the units in n, then it will measure cy by the units in nc.
Página 139 - Arc, on the Sine and Cosine of an Arc in terms of the Arc itself, and a new Theorem for the Elliptic Quadrant.
Página 137 - The differential of the logarithm of a function is equal to the differential of the function, divided by the function itself.
Página 149 - The pyramid may be conceived to be made up of an infinite number of planes parallel to ABC.
Página 81 - ... sum of any number of quantities is equal to the sum of the corresponding functions of each of these quantities, will be called distributive
Página 86 - We thus derive the following method for multiplying two binomials which have a common first term : The first term of the product is the square of the common first terms of the binomials.