document.write( "Question 102959: i stands for iota which equals -1\r
\n" ); document.write( "\n" ); document.write( "is it real and rational, real and irrational, or complex?\r
\n" ); document.write( "\n" ); document.write( "I'm thinking it is real and rational.-1 is on the number line. I'm thrown off by the word real. Is i classified as a real number, even though it is imaginary?\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

Algebra.Com's Answer #74880 by MathLover1(20850) $\"\"$ $\"About$

You can put this solution on YOUR website!
\r
\n" ); document.write( "\n" ); document.write( "In mathematics, a complex number is a number of the form
\n" ); document.write( " $\"a+%2B+bi\"$ \r
\n" ); document.write( "\n" ); document.write( "where $\"a\"$ and $\"b\"$ are $\"real\"$ numbers, and $\"i\"$ is the $\"imaginary\"$ unit, with the property $\"i+%5E2+=-1\"$ . \r
\n" ); document.write( "\n" ); document.write( "The $\"real\"$ $\"+number\"$ $\"+a\"$ is called the real part of the complex number, and the $\"real\"$ $\"+number\"$ $\"+b\"$ is the $\"imaginary\"$ part. \r
\n" ); document.write( "\n" ); document.write( "Real numbers $\"may\"$ be considered to be complex numbers with an imaginary part of $\"zero\"$ ; that is, the real number $\"a+\"$ is equivalent to the complex number $\"a%2B0i\"$ .\r
\n" ); document.write( "\n" ); document.write( "In mathematics, the $\"real\"$ $\"+numbers\"$ may be described informally as numbers that can be given by an infinite decimal representation, such as 2.4871773339….
\n" ); document.write( "The real numbers $\"include\"$ both $\"rational\"$ numbers (such as $\"42\"$ and − $\"23%2F129\"$ ), and $\"irrational\"$ numbers (such as $\"Pi\"$ and the $\"sqrt+%282%29\"$ , and can be represented as points along an infinitely long number line.\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

\n" );