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Earn +20 ptsQ: What is the magnitude of the complex number 3-9i?
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What is the complex number of its distance for the origin in the complex plane?
This is called the magnitude. It can be found (for a complex number a + bi) as:(where a & b are both real numbers and i is the imaginary unit)sqrt(a^2 + b^2)
What is the order of magnitude of the number of birthdays you have had?
Tens.
Is negative one third an irrational number?
No. A rational number is any number whose magnitude is the ratio of whole numbers.The magnitude of (one third) is the ratio ( 1 / 3 ).
What is the order of magnitude of the number 7985345?
6
Is the square root of 1 an irrational number?
No. An irrational number is still a real number - it lives on the number line.The square root of -1 (known as i) is an imaginary number. It is on the imaginary axis of the complex plane.A number with components from the real axis and the imaginary axis is a complex number, and is on the complex plane.
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