What is the area of a rectangular room with a length of 5 -3i and a width of 2i?

Answer 1

Area of rectangular room to is #6+10i#.

Area of a rectangle is length multiplied by width. Here length and width are complex numbers and hence, we should remember #i^2=-1#.

Hence area is #(5-3i)xx2i=10i-6i^2=10i-6*(-1)=10i+6# or #6+10i#

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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