Answering the question in general terms:
1. Since we are taught the property at an early age (initially without identifying it formally as a property) , our use of it generally goes unnoticed (for example, when it occurs in a multiplication problem involving the digit 1).
2. When solving algebra or arithmetic problems or proofs, if we can reduce a factor to 1, then by the property we can eliminate this complicating factor.
3. Having identified this property, we can create new mathematical systems within which we can then decide whether or not to include that property.
Subtraction is not an identity property but it does have an identity property. The identity is 0 and each number is its own inverse with respect to subtraction. However, this is effectively the same as the inverse property of addition so there is no real need to define it as a separate property.
The identity property is the property that all numbers, real or imaginary, can be multiplied by 1 to obtain the same number; e.g., 14x1 = 14.
The multiplicative inverse of a complex number is the reciprocal of that number. To find the multiplicative inverse of 4 + i, we first need to find the conjugate of 4 + i, which is 4 - i. The product of a complex number and its conjugate is always a real number. Therefore, the multiplicative inverse of 4 + i is (4 - i) / ((4 + i)(4 - i)) = (4 - i) / (16 + 1) = (4 - i) / 17.
That is how an identity is defined. If the solution was not true for all numbers, then it would not be called an identity. In fact, it should be true for all complex numbers as well.
A real life example of a cliff are the white cliffs of Dover.
For every real number, x, which is not zero, there exists a real number x' such that x * x' = x' * x = 1, the multiplicative identity.
-3 does not have a multiplicative identity in the set of real numbers.
1/2 times 1 = 1/2 The definition of Multiplicative identity: the number 1 (for real number) hope that helps
Multiplicative identity: There exists a unique nonzero real number 1 (one) such that 1 x a = a x 1 = a.
It is 1, as it is for all complex numbers - which includes real numbers.
a * 0=0
It is when u multiplicative by zero n it = zero
The property of reciprocals as multiplicative inverses.
Subtraction is not an identity property but it does have an identity property. The identity is 0 and each number is its own inverse with respect to subtraction. However, this is effectively the same as the inverse property of addition so there is no real need to define it as a separate property.
The identity property is the property that all numbers, real or imaginary, can be multiplied by 1 to obtain the same number; e.g., 14x1 = 14.
It isa natural numberan integera rational numbera real numbera complex numberIt is also the multiplicative identity of each of the above sets of numbers.
The only real (or complex) number which does not have a multiplicative inverse is 0. There is nothing you can multiply by 0 to get 1.