Question

Question #35062

Answer 1

For `z = x + i y`, we have `Im(z) = y`,....., not `iy`. The imaginary part of a complex number is not imaginary.

So: `-3.13i xx -1.06i =-( -3.13 xx -1.06 )`

But: `Im(-3.13i) xx Im(-1.06i) = -3.13 xx -1.06`

And generally:

`Im(x+iy) xx Im(u + i v) = yv`