Bytelearn - cat image with glassesAI tutor

Welcome to Bytelearn!

Let’s check out your problem:

Which of the following is equivalent to the complex number 
i^(41) ?
Choose 1 answer:
(A) 1
(B) 
i
(C) -1
(D) 
-i

Which of the following is equivalent to the complex number i41 i^{41} ?\newlineChoose 11 answer:\newline(A) 11\newline(B) i i \newline(C) 1-1\newline(D) i -i

Full solution

Q. Which of the following is equivalent to the complex number i41 i^{41} ?\newlineChoose 11 answer:\newline(A) 11\newline(B) i i \newline(C) 1-1\newline(D) i -i
  1. Definition of i: To find the equivalent of i raised to any power, we need to remember that i is the imaginary unit, defined as i=1i = \sqrt{-1}. The powers of i repeat in a cycle: ii, 1-1, i-i, 11, and then back to ii. This cycle repeats every 44 powers.
  2. Determining the Power Cycle: Let's find the remainder when 4141 is divided by 44 to determine where in the cycle i41i^{41} will land. \newline4141 divided by 44 is 1010 with a remainder of 11.
  3. Finding the Remainder: Since the remainder is 11, i41i^{41} is equivalent to i410+1i^{4\cdot10 + 1}, which is the same as (i4)10i1(i^4)^{10} \cdot i^1. We know that i4=1i^4 = 1, so this simplifies to 110i1^{10} \cdot i, which is just ii.
  4. Simplifying the Expression: Therefore, i41i^{41} is equivalent to ii. This corresponds to choice (B)(B) in the given options.

More problems from Domain and range of quadratic functions: equations