Imaginary numbers are slightly different than other variables. We know that i is the same thing as the square root of -1, which doesn't make any sense, so we leave it in the problem. But what if we see i to the second power? We plug in a -1 instead! Why is this important? Because we cannot have anything higher than i in the solution to a problem. Therefore, if we see i squared in a problem, we must change it to -1 instead and then simplify.
To see a few examples on how to simplify expressions with i in them, please click the link below:
http://www.educreations.com/lesson/view/simplifying-radicals/13379407/?s=5goBUq&ref=app
No comments:
Post a Comment