Question: ABCD is a square, lettered anticlockwise, on an Argand diagram, with A representing 3 + j2 and B representing 1 + j4. Show that C

ABCD is a square, lettered anticlockwise, on an Argand diagram, with A representing 3 + j2 and B representing –1 + j4. Show that C lies on the real axis and find the complex number represented by D and the length of AB.

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