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Mathematics 21 Online
OpenStudy (anonymous):

A & B are wrong please help Identify the real and imaginary parts, respectively, of a complex number. 4 + (- 2i) Select one: a. 4 and 2((incorrect)) b. -4 and 2(( Incorrect)) c. 2 and 4 d. 4 and -2

OpenStudy (wmj259):

Notice that the formula for determining which number is real and which is not includes the SIGN before each number. a+bi or a-bi or -a+bi or -a-bi. Notice that the the sign before each number DOES MATTER. (+ or -)REAL (+ or - )IMAGINARY

OpenStudy (anonymous):

\[4-2i\] real part is \(4\) imaginary part is \(-2\)

OpenStudy (anonymous):

So its D?

OpenStudy (wmj259):

Thats correct.: Here's an example problem so I know you understood what I wrote. -59+(-16i)

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