# Thread: quick complex number question

1. ## quick complex number question

when asked to write a complex number in cartesian is this is this 2+3i for example??

2. Originally Posted by hmmmm
when asked to write a complex number in cartesian is this is this 2+3i for example??
Yes.

3. Originally Posted by hmmmm
when asked to write a complex number in cartesian is this is this 2+3i for example??
Yes, a complex number is any number that includes the squareroot of a negative number. Since i^2 is defined to be -1, any number including i is an imaginary number.

4. Originally Posted by Math Major
Yes, a complex number is any number that includes the squareroot of a negative number. Since i^2 is defined to be -1, any number including i is an imaginary number.
I think the question was not whether that was a complex number but whether it was in "Cartesian" form, as opposed to polar form.