
These calculators are for use with complex numbers  meaning numbers that have the form a + bi where 'i' is the square root of minus one. Do NOT enter the letter 'i' in any of the boxes. A complex number such as 3 + 5i would be entered as a=3 bi=5. For a complex number such as 7 + i, you would enter a=7 bi=1. If entering just the number 'i' then enter a=0 and bi=1.
When DIVIDING, it is important to enter the denominator in the second row. For example: To learn about imaginary numbers and complex number multiplication, division and square roots, click here.

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