Question:
find the absolute value of (i-1)(2 i)
Answer:
Given, (i - 1)*(2 + i)
= i * 2 + i * i - 1 * 2 - 1 * i
= 2i - i2 - 2 - i
= i - (-1) - 2
= i + 1 - 2
= i - 1
= i + (-1)
Now, |i - 1| = √{12 + (-1)2 }
= √(1 + 1)
= √2
So, the absolute value of (i - 1)*(2 + i) = √2
Not what you are looking for? Go ahead and submit the question, we will get back to you.
