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Understanding Imaginary Numbers: Basics and Applications

Learn about imaginary numbers and why multiplying two negative numbers results in a positive value with the introduction of the imaginary number 'i.' Explore the concept of i squared being equal to -1 and how it relates to square roots. Practice using 'i' in mathematical calculations.

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Understanding Imaginary Numbers: Basics and Applications

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  1. Imaginary Numbers Background Info:When you multiply two negative numbers, the result is positive. (-1) * (-1) = 1 Therefore:You CANNOT multiply two negative REAL numbers and get a negative answer. That’s why mathematicians developed the IMAGINARY NUMBER called i i ∙i= -1

  2. Imaginary Numbers (con’t) Sincei2 = -1 then the square root of -1 must be i.

  3. How to use i

  4. PRACTICE using i

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