An Introduction to Algebra: With Notes and Observations : Designed for the Use of Schools and Places of Public Education : to which is Added an Appendix on the Application of Algebra to GeometryEvert Duyckinck, Daniel D. Smith and George Long, 1818 - 260 σελίδες |
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Σελίδα 76
... bers 2 , 4 , 6 , 8 , 10 , 12 , & c . Ans . 720 . 7. The first term of a decreasing arithmetical series is 10 , the common difference and the number of terms Ans . 140 . 1 3 ' 21 ; required the sum of the series . 8. One hundred stones ...
... bers 2 , 4 , 6 , 8 , 10 , 12 , & c . Ans . 720 . 7. The first term of a decreasing arithmetical series is 10 , the common difference and the number of terms Ans . 140 . 1 3 ' 21 ; required the sum of the series . 8. One hundred stones ...
Σελίδα 119
... bers , Hence tion , x ( x + 3y ) = x2 + 3xy = 45 x + y ( x + 2y ) = x2 + 3xy + 2y2 = 77 } by the ques- And 2y2 = 77-45 = 32 , by subtraction , 32 Or y2 = 16 by division , and y = ✓✓ / 16 = 4 , 2 Therefore x2 + 3xy = x2 + 12x = 45 , by ...
... bers , Hence tion , x ( x + 3y ) = x2 + 3xy = 45 x + y ( x + 2y ) = x2 + 3xy + 2y2 = 77 } by the ques- And 2y2 = 77-45 = 32 , by subtraction , 32 Or y2 = 16 by division , and y = ✓✓ / 16 = 4 , 2 Therefore x2 + 3xy = x2 + 12x = 45 , by ...
Σελίδα 138
... bers , the operation will stand thus : First Sup . Second Sup . 4.3 4.2 17.64 • · 74.088 · x x2 18.49 · X3 • · 79.507 95.928 Results 102.297 102.297 4.3 • • · Therefore 95.928 • • 4.2 102.297 100 6.369 : .1 :: 2.297 : .036 So that the ...
... bers , the operation will stand thus : First Sup . Second Sup . 4.3 4.2 17.64 • · 74.088 · x x2 18.49 · X3 • · 79.507 95.928 Results 102.297 102.297 4.3 • • · Therefore 95.928 • • 4.2 102.297 100 6.369 : .1 :: 2.297 : .036 So that the ...
Σελίδα 139
... bers ; then First Sup . 4.264 18.181696 77.526752 • • Second Sup . 4.265 • X x2 18.190225 • · x3 • 77.581310 100.036535 99.972448 Results Therefore 100.036535 4.265 100 99.972448 4.264 99.972448 .064087 : .001 :: And consequently ...
... bers ; then First Sup . 4.264 18.181696 77.526752 • • Second Sup . 4.265 • X x2 18.190225 • · x3 • 77.581310 100.036535 99.972448 Results Therefore 100.036535 4.265 100 99.972448 4.264 99.972448 .064087 : .001 :: And consequently ...
Σελίδα 150
... bers , which admit of no common divisor , except when it is also a divisor of c . RULE . 1. Let wh denote a whole , or integral number ; and reduce the equation to the form by ± c α c - by —wh , or x = wh . α 2. Throw all whole numbers ...
... bers , which admit of no common divisor , except when it is also a divisor of c . RULE . 1. Let wh denote a whole , or integral number ; and reduce the equation to the form by ± c α c - by —wh , or x = wh . α 2. Throw all whole numbers ...
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An Introduction to Algebra; With Notes and Observations: Designed for the ... John Bonnycastle Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2017 |
Συχνά εμφανιζόμενοι όροι και φράσεις
Algebra arise arithmetical mean arithmetical series bers coefficient common index consequently cube root cubic equation decimal denoted determine divisor equal EXAMPLES FOR PRACTICE find the difference find the square find the sum find the value find two numbers frac fraction geometrical progression geometrical series give given equation given number greatest common measure Hence infinite series last term letters loga logarithms multiplied natural number negative nth root number of terms number required orders of differences perpendicular plane triangle PROBLEM proportion quadratic equation question quotient rational remainder required the numbers Required the product Required the sum required to convert required to divide required to find required to reduce result right angled triangle rithm rule second term simple form square number square root substituted subtracted surd tion transposition triangle ABC unknown quantity Whence whole numbers α α
Δημοφιλή αποσπάσματα
Σελίδα 37 - Now .} of f- is a compound fraction, whose value is found by multiplying the numerators together for a new numerator, and the denominators for a new denominator.
Σελίδα 20 - Divide the first term of the dividend by the first term of the divisor, and write the result as the first term of the quotient. Multiply the whole divisor by the first term of the quotient, and subtract the product from the dividend.
Σελίδα 40 - ... required. Or, multiply the quantity into itself as many times, less one, as is denoted by the index of the power, and the last product will be tJie answer.
Σελίδα 201 - From which it is evident, that the logarithm of the product of any number of factors is equal to the sum of the logarithms of those factors.
Σελίδα 107 - A hare is 50 leaps before a greyhound, and takes 4 leaps to the greyhound's 3 ; but 2 of the greyhound's leaps are equal to 3 of the hare's ; how many leaps must the greyhound take, to catch the hare ? Let x be the number of leaps taken by the hound.
Σελίδα 121 - It is required to divide the number 24 into two such parts, that their product may be equal to 35 times their difference. Ans. 10 and 14.
Σελίδα 107 - To divide the number 90 into four such parts, that if the first be increased by 2, the second diminished by 2, the third multiplied...
Σελίδα 108 - If A and B together can perform a piece of work in 8 days, A and C together in 9 days, and B and C in 10 days : how many days would it take each person to perform the same work alone ? Ans.
Σελίδα 121 - It is required to divide the number 60 into two such parts, that their product shall be to the sum of their squares in the ratio of 2 to 5.
Σελίδα 31 - To reduce an improper fraction to a whole or mixed quantity. RULE. Divide the numerator by the denominator, for the integral part, and place the remainder, if any, over the denominator, for the fractional part; then the two, joined together, with the proper sign between them, will give the mixed quantity required.