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    hey, im just going over FP2 (making revision cards/notes) and I cant remember where iy comes from in:  arg(Z-2) = arg(x-2) + iy)
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    (Original post by Maths&physics)
    hey, im just going over FP2 (making revision cards/notes) and I cant remember where iy comes from in:  arg(Z-2) = arg(x-2) + iy)
    z is defined to be x+iy for x,y \in \mathbb{R}

    So z-2 = x+iy -2 = (x-2)+iy
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    (Original post by RDKGames)
    z is defined to be x+iy for x,y \in \mathbb{R}

    So z-2 = x+iy -2 = (x-2)+iy
 
 
 
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