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Could there be an identity matrix for matrix addition similar to the additive identity for the set of real numbers?
Wiki User
∙ 11y ago
i dont even flucking know
Wiki User
∙ 11y ago
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What is the difference between the zero property of multiplication and the identity property of addition?
Usually, the identity of addition property is defined to be an axiom (which only specifies the existence of zero, not uniqueness), and the zero property of multiplication is a consequence of existence of zero, existence of an additive inverse, distributivity of multiplication over addition and associativity of addition. Proof of 0 * a = 0: 0 * a = (0 + 0) * a [additive identity] 0 * a = 0 * a + 0 * a [distributivity of multiplication over addition] 0 * a + (-(0 * a)) = (0 * a + 0 * a) + (-(0 * a)) [existence of additive inverse] 0 = (0 * a + 0 * a) + (-(0 * a)) [property of additive inverses] 0 = 0 * a + (0 * a + (-(0 * a))) [associativity of addition] 0 = 0 * a + 0 [property of additive inverses] 0 = 0 * a [additive identity] A similar proof works for a * 0 = 0 (with the other distributive law if commutativity of multiplication is not assumed).
What is the difference between additive identity and additive inverse?
The additive inverse is a number subtracted it's self is 0: x + (-x) = 0 The additive identity is a number plus/minus 0 is itself: x +/- 0 = x They're very similar
What is called the multiplicative identity for whole numbers and why is it called this?
The multiplicative identity is the number 1. Why? Because if you multiply (or divide) a number by 1, it remains the same. eg a x 1 = a In a similar manner, the additive identity is 0. If you add (or subtract) 0 from a number, it remains the same eg a + 0 = a.
Is self-esteem similar but different from identity?
is self esteem similar but different from identity?
How are the identity properties of multiplication and addition similar?
Multiplication is simply a shortcut for repeated addition of the same number.For example, 4 x 2 is the same as 2 + 2 + 2 + 2(two added to itself, four times).
What is the opposite of -29?
+29
What is the opposite of -(-36)?
The opposite of opposite is same, like or similar. A double negative leads to the original identity of the term. So the answer is same or identical.
Is self-esteem different from identity?
is self-esteem similar but different from identity?
Addition of similar fractions?
Similar fractions occurs when the denominator or the bottom numbers are the same. In this case, adding similar fractions requires you to add the numerators; the top numbers together, and to keep the denominator the same. An example would be to add 2/8 and 5/8 equals 7/8.
What is the opposite of 22?
The opposite of opposite is same, like or similar. A double negative leads to the original identity of the term. So the answer is same or identical.
What are the rules of subtracting polynomials?
You subtract a polynomial by adding its additive inverse. For example, subtracting (x - y) is the same as adding (-x + y). Alternately, you can simply subtract similar terms - that is, subtract the coefficients (the numbers) for terms that have the same combination of variables.
What are the different properties of real numbers?
Properties of real numbersIn this lesson we look at some properties that apply to all real numbers. If you learn these properties, they will help you solve problems in algebra. Let's look at each property in detail, and apply it to an algebraic expression.#1. Commutative propertiesThe commutative property of addition says that we can add numbers in any order. The commutative property of multiplication is very similar. It says that we can multiply numbers in any order we want without changing the result.addition5a + 4 = 4 + 5amultiplication3 x 8 x 5b = 5b x 3 x 8#2. Associative propertiesBoth addition and multiplication can actually be done with two numbers at a time. So if there are more numbers in the expression, how do we decide which two to "associate" first? The associative property of addition tells us that we can group numbers in a sum in any way we want and still get the same answer. The associative property of multiplication tells us that we can group numbers in a product in any way we want and still get the same answer.addition(4x + 2x) + 7x = 4x + (2x + 7x)multiplication2x2(3y) = 3y(2x2)#3. Distributive propertyThe distributive property comes into play when an expression involves both addition and multiplication. A longer name for it is, "the distributive property of multiplication over addition." It tells us that if a term is multiplied by terms in parenthesis, we need to "distribute" the multiplication over all the terms inside.2x(5 + y) = 10x + 2xyEven though order of operations says that you must add the terms inside the parenthesis first, the distributive property allows you to simplify the expression by multiplying every term inside the parenthesis by the multiplier. This simplifies the expression.#4. Density propertyThe density property tells us that we can always find another real number that lies between any two real numbers. For example, between 5.61 and 5.62, there is 5.611, 5.612, 5.613 and so forth.Between 5.612 and 5.613, there is 5.6121, 5.6122 ... and an endless list of other numbers!#5. Identity propertyThe identity property for addition tells us that zero added to any number is the number itself. Zero is called the "additive identity." The identity property for multiplication tells us that the number 1 multiplied times any number gives the number itself. The number 1 is called the "multiplicative identity."Addition5y + 0 = 5yMultiplication2c × 1 = 2c* * * * *The above is equally true of the set of rational numbers.One of the main differences between the two, which was used by Dedekind in defining real numbers is that a non-empty set of real numbers that is bounded above has a least upper bound. This is not necessarily true of rational numbers.
