
Definition of Pure imaginary number
1. Noun. An imaginary number of the form a+bi where a is 0.
Specialized synonyms: Imaginary Part, Imaginary Part Of A Complex Number
Pure Imaginary Number Pictures
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Lexicographical Neighbors of Pure Imaginary Number
Literary usage of Pure imaginary number
Below you will find example usage of this term as found in modern and/or classical literature:
1. Advanced Course in Algebra by Webster Wells (1904)
"The symbol y/— a is called a pure imaginary number. It is, of course, impossible
to find any real number whose nth power equals — a ; but there are many ..."
2. The American Mathematical Monthly by Mathematical Association of America (1922)
"A pure imaginary number is defined as the product of i and of a real number (so
that 0 is included). Imaginary and complex numbers are then declared to be ..."
3. College Algebra by James Harrington Boyd (1901)
"A pure imaginary number is an indicated even root of a negative number; as  / ,
r = j, 2) 3, . . . On the contrary, all other numbers, ..."
4. School Algebra by Henry Lewis Rietz (1915)
"Graph of a pure imaginary number. We have shown that any real number a may be
represented on a straight line. Fio. 31 If we multiply о by 1, ..."
5. College Algebra by James Harrington Boyd (1901)
"A pure imaginary number is an indicated even root of a negative number; as ^—^
ly—f^ Or°V^~6 when r = 1, 2, 3, . . . On the contrary, all other numbers, ..."
6. A First Course in Algebra by Webster Wells (1908)
"An imaginary number of the form V—a is called a pure imaginary number, and the
sum of a real and an imaginary is called a complex number; as a+6v —1. 220. ..."
7. Elementary Algebra by George Hervey Hallett, Robert Franklin Anderson (1917)
"pure imaginary number. The square root of a negative number is called a pure ...
The pure imaginary number V— 1 is called the imaginary unit and is denoted ..."
8. College Algebra by Webster Wells (1890)
"An imaginary number of the form 6V—1 is called a pure imaginary number; and one
of the form a + 6V— 1, where a is not zero, is called a complex number. ..."