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Earn +20 ptsQ: Are all numbers complex
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Continue Learning about Algebra
What is the domain of y equals sin x?
All real numbers. Or all complex numbers, if you are working with complex numbers.
Every integer is a complex number?
Yes. Every integer is a rational number. Every rational number is a real number. Every real number is a complex number. The complex numbers include all real numbers and all real numbers multiplied by the imaginary number i=sqrt(-1) and all the sums of these.
Why is the solution to an identity all real numbers?
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.
What numbers have an absolute value of 8?
8, and minus 8. If you want to include complex numbers, all numbers on a circle with radius 8.
Can The domain of all polynomials are all real numbers?
Yes, it cannot contain any imaginary numbers
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