College AlgebraD.C. Heath & Company, 1890 - 577 páginas |
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Página 15
... prove that ( 1 ) and ( 2 ) hold when b is a negative number . Let bb ' ; then bb ' ( Art . 31 ) , and b ' is a positive number . Now , ax ( -b ) = a × b ' = ab ' ; ( 4 ) and ( -a ) x b = ( - a ) × ( b ' ) = ab ' , by ( 3 ) . ( 5 ) But ...
... prove that ( 1 ) and ( 2 ) hold when b is a negative number . Let bb ' ; then bb ' ( Art . 31 ) , and b ' is a positive number . Now , ax ( -b ) = a × b ' = ab ' ; ( 4 ) and ( -a ) x b = ( - a ) × ( b ' ) = ab ' , by ( 3 ) . ( 5 ) But ...
Página 16
... proved to hold when b is a negative number . 56. By Arts . 7 and 55 , ( + α ) x ( + b ) = + ab , ( + a ) x ( -b ) = - ab , ( -a ) x ( + b ) = — ab , and ( a ) x ( -b ) = + ab . From these results , we may state what is called the Rule ...
... proved to hold when b is a negative number . 56. By Arts . 7 and 55 , ( + α ) x ( + b ) = + ab , ( + a ) x ( -b ) = - ab , ( -a ) x ( + b ) = — ab , and ( a ) x ( -b ) = + ab . From these results , we may state what is called the Rule ...
Página 17
... proved that the product of any set of numbers is the same in whatever order they are taken . This is called the Commutative ... prove that ( 1 ) holds when any or all of the numbers a , b , and c are negative . I. Let a and b be positive ...
... proved that the product of any set of numbers is the same in whatever order they are taken . This is called the Commutative ... prove that ( 1 ) holds when any or all of the numbers a , b , and c are negative . I. Let a and b be positive ...
Página 18
... proved that ( 1 ) holds when a and c are positive numbers , and b a negative number . II . Let a be a positive number , and b and c negative numbers . Let bb ' , and c - c ' ; then b ' and c ' are positive numbers . Now , Also , a ( b + ...
... proved that ( 1 ) holds when a and c are positive numbers , and b a negative number . II . Let a be a positive number , and b and c negative numbers . Let bb ' , and c - c ' ; then b ' and c ' are positive numbers . Now , Also , a ( b + ...
Página 45
... prove that if n is any positive integer , I. a " -b " is always divisible ( Note , p . 36 ) by a- b . II . a " b " is divisible by a + b , if n is even . III . a " b " is divisible by a + b , if n is odd . IV . a " b " is divisible by ...
... prove that if n is any positive integer , I. a " -b " is always divisible ( Note , p . 36 ) by a- b . II . a " b " is divisible by a + b , if n is even . III . a " b " is divisible by a + b , if n is odd . IV . a " b " is divisible by ...
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Términos y frases comunes
a₁ ab² absolute value Algebra arithmetical arithmetical means b₁ Binomial Binomial Theorem coefficient common factor Commutative Law Compare Art complex number continued fraction convergent cube root decimal denominator denote determinant Dividing divisible divisor equal EXAMPLES exponent Extracting the square figures Find the numbers follows from Art geometrical progression given equation Hence imaginary number infinite series last term letters logarithm mantissa Multiplying Note nth root number Art number of terms obtained P₁ partial fractions perfect power polynomial positive integer prove pure imaginary quadratic equation quotient radical sign rational and integral rational numbers real number remainder represented result rule of Art second term Solve the equation square root Sturm's Theorem Substituting Subtracting surd Theorem third unknown quantities Whence zero
Pasajes populares
Página 41 - The square of the sum of two numbers is equal to the square of the first, plus twice the product of the first by the second, plus the square of the second.
Página 270 - In any proportion the terms are in proportion by Composition; that is, the sum of the first two terms is to the first term as the sum of the last two terms is to the third term.
Página 271 - In a series of equal ratios, any antecedent is to its consequent, as the sum of all the antecedents is to the sum of all the consequents. Let a: 6 = c: d = e :/. Then, by Art.
Página 269 - If the product of two quantities is equal to the product of two others, one pair may be made the extremes, and the other pair the means, of a proportion. Let ad = ос.
Página 268 - The terms of a ratio are the two numbers to be compared; thus, in the above ratio, 20 and 4 are the terms. When both terms are considered together, they are called a couplet ; when considered separately, the first term is called the antecedent, and the second term the consequent. Thus, in the ratio 20 : 4, 20 and 4 form a couplet, and 20 is the antecedent, and 4 the consequent.
Página 140 - ... from the given expression. Divide the first term of the remainder by twice the first term of the root, and add the quotient to the root and also to the divisor.
Página 137 - Arts. 200 and 201 we derive the following rule : Extract the required root of the numerical coefficient, and divide the exponent of each letter by the index of the root.
Página 38 - Divide the first term of the dividend by the first term of the divisor, giving the first term of the quotient. Multiply the whole divisor by this term, and subtract the product from the dividend, arranging the remainder in the same order of powers as the dividend and divisor.
Página 79 - Multiply the numerators together for the numerator of the product, and the denominators together for the denominator of the product.
Página 270 - In any proportion the terms are in proportion by Alternation ; that is, the first term is to the third as the second term is to the fourth.