SOLUTION: Given the fact that i, the imaginary unit is √-1, what will be the value of {{{ 4i^46 }}} A.) {{{ 4 }}} B.) {{{ -4 }}} C.) {{{ 4i }}} D.) {{{ -4i }}}

Algebra ->  Test -> SOLUTION: Given the fact that i, the imaginary unit is √-1, what will be the value of {{{ 4i^46 }}} A.) {{{ 4 }}} B.) {{{ -4 }}} C.) {{{ 4i }}} D.) {{{ -4i }}}      Log On


   



Question 1054004: Given the fact that i, the imaginary unit is √-1, what will be the value of +4i%5E46+
A.) +4+
B.) +-4+
C.) +4i+
D.) +-4i+

Found 3 solutions by Boreal, ikleyn, MathTherapy:
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
i^46 is like i^2=-1
The answer is 4*(-1)=-4
i^1=i
i^2=-1
i^3=-i
i^4=1
B

Answer by ikleyn(52798) About Me  (Show Source):
You can put this solution on YOUR website!
.
The degrees of i%5En go in the cyclical order


degree n:  1   2   3   4   5   6   7   8   9   10   11   12 . . . 


i%5En:       i  -1  -i   1   i  -1  -i   1   i   -1   -i    1 . . . 


Therefore, i%5E46 = i%5E44%2Ai%5E2 = i%5E2 = -1.

See the lesson
    - Solved problems on arithmetic operations on complex numbers
in this site.

There is a bunch of my lessons on complex numbers

    - Complex numbers and arithmetical operations on them
    - Complex plane
    - Addition and subtraction of complex numbers in complex plane
    - Multiplication and division of complex numbers in complex plane
    - Raising a complex number to an integer power
    - How to take a root of a complex number
    - Solution of the quadratic equation with real coefficients on complex domain
    - How to take a square root of a complex number
    - Solution of the quadratic equation with complex coefficients on complex domain

    - Solved problems on taking roots of complex numbers
    - Solved problems on arithmetic operations on complex numbers
    - Solved problem on taking square root of complex number
    - Miscellaneous problems on complex numbers

in this site.

Also, you have this free of charge online textbook in ALGEBRA-II in this site
    - ALGEBRA-II - YOUR ONLINE TEXTBOOK.

The referred lessons are the part of this online textbook.


Answer by MathTherapy(10552) About Me  (Show Source):
You can put this solution on YOUR website!

Given the fact that i, the imaginary unit is √-1, what will be the value of +4i%5E46+
A.) +4+
B.) +-4+
C.) +4i+
D.) +-4i+