Q. Which of the following is equivalent to the complex number i41 ?Choose 1 answer:(A) 1(B) i(C) −1(D) −i
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=−1. The powers of i repeat in a cycle: i, −1, −i, 1, and then back to i. This cycle repeats every 4 powers.
Determining the Power Cycle: Let's find the remainder when 41 is divided by 4 to determine where in the cycle i41 will land. 41 divided by 4 is 10 with a remainder of 1.
Finding the Remainder: Since the remainder is 1, i41 is equivalent to i4⋅10+1, which is the same as (i4)10⋅i1. We know that i4=1, so this simplifies to 110⋅i, which is just i.
Simplifying the Expression: Therefore, i41 is equivalent to i. This corresponds to choice (B) in the given options.
More problems from Domain and range of quadratic functions: equations