Mathematics, 21.12.2020 20:40 hardwick744

I am trying to get the value of imaginary numbers. The expression is and now if I evaluate it like this,
I get -1
Again, if I evaluate it like this,
I get 1
So there are two values -1 and 1. Which one is correct? If either of these two is incorrect, why?

$i^2 = (\sqrt{-1} )^2\\= -1$
$i^2 = i \times i\\= \sqrt{-1} \times \sqrt{-1}\\= \sqrt{-1 \times -1}\\= \sqrt{1}\\= 1\\$

Answers: 2

Show answers

Other questions on the subject: Mathematics

Mathematics, 21.06.2019 20:10, tiggyandrep2dbee

Look at the hyperbola graphed below. the hyperbola gets very close to the red lines on the graph, but it never touches them. which term describes each of the red lines? o o o o a. asymptote b. directrix c. focus d. axis

Answers: 3

continue

Mathematics, 22.06.2019 00:00, dcwills17

The equation of line wx is y=2x-5. write an equation of a line perpendicular to line wx in slopeintercept form the contains points (-1,-2)

Answers: 2

continue

Mathematics, 22.06.2019 00:20, elloemill

How is this equation completed? i cannot find any examples in the book.

Answers: 1

continue

Mathematics, 22.06.2019 02:10, dillondelellis2006

Which option identifies how kevin should proceed in the following scenario? four years ago kevin designed an mp3 player for young children. now that technology has changed, he would like to update his design to ensure that it encompasses cutting-edge techniques. by creating a third-angle projection of his ideas by designing an isometric projection of his new ideas by referring to past designs and illustrations of his original model by conferring with engineers who have improved upon similar devices

Answers: 3

continue

You know the right answer?

I am trying to get the value of imaginary numbers. The expression is and now if I evaluate it like...