# publicKhan/khan-exercises

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 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 `        Adding and subtracting complex numbers

randRange( -5, 5 )        randRange( -5, 5 )        randRange( -5, 5 )        randRange( -5, 5 )        randFromArray( [ "add", "subtract" ] )        ( OPERATION === "add" ? "+" : "-" )                    ( OPERATION === "add" ? ( A_REAL + B_REAL ) : ( A_REAL - B_REAL ) )                            ( OPERATION === "add" ? ( A_IMAG + B_IMAG ) : ( A_IMAG - B_IMAG ) )                            complexNumber(A_REAL, A_IMAG)                            complexNumber(B_REAL, B_IMAG)                            "\\color{" + ORANGE + "}{" + A_REP + "}"                            "\\color{" + BLUE + "}{" + B_REP + "}"                            "\\color{" + ORANGE + "}{" + A_REAL + "}"                            "\\color{" + ORANGE + "}{" + A_IMAG + "}"                            "\\color{" + BLUE + "}{" + B_REAL + "}"                            "\\color{" + BLUE + "}{" + B_IMAG + "}"

(A_REP_COLORED) OPERATOR (B_REP_COLORED)

Complex numbers can be OPERATIONed by separately OPERATIONing their real and imaginary components.

The real components of the two complex numbers are A_REAL and B_REAL, respectively,                    so the real component of the result will be                                            A_REAL_COLORED OPERATOR \color{BLUE}{negParens(B_REAL)}                    ,                    which equals ANSWER_REAL.

The imaginary components of the two complex numbers are A_IMAG and B_IMAG, respectively,                    so the imaginary component of the result will be                                            A_IMAG_COLORED OPERATOR \color{BLUE}{negParens(B_IMAG)}                    ,                    which equals ANSWER_IMAG.