Imaginary Numbers

An imaginary number is a complex number that can be written as a real number multiplied by the imaginary unit i, which is defined by its property i² = ?1. The square of an imaginary number bi is ?b². For example, 5i is an imaginary number, and its square is ?25. Zero is considered to be both real and imaginary.

From:Wikipedia

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Stuart Raffeld
About Stuart Raffeld

B. A. Operations Research & Statistics, California State University, Long Beach, Teaching Assistant undergraduate Mathematics. B.S. Mathematics, California State University, Long Beach. Mathematics University of California, Irvine, Teaching Assistant undergraduate Mathematics. Completed course work for MS Degree with 4.0 GPA. M.S. Mathematics, Kingsbridge University. Transcript available upon request. 1988-Present: Mathematics tutoring--One on one tutoring for SES students through YP institute and Academic advantage. Tutored students with low learning skills as well as very bright students. Tutored groups of four students in math classes from basic mathematics through calculus. Mathematics teaching for EFN, Inc., a private school.