document.write( "Question 361631: on page 280 of the algebra 2 book problem 5 reads i^40 i cant figure out how to solve it... \n" ); document.write( "
Algebra.Com's Answer #257845 by jrfrunner(365)\"\" \"About 
You can put this solution on YOUR website!
\"i%5En\" cycles in factors of 4
\n" ); document.write( "--
\n" ); document.write( "\"i%5E0=1\"
\n" ); document.write( "\"i%5E1=i=sqrt%28-1%29\"
\n" ); document.write( "\"i%5E2=-1\"
\n" ); document.write( "\"i%5E3=i%5E2%2Ai=-1%2Ai=-i\"
\n" ); document.write( "\"i%5E4=i%5E2%2Ai%5E2=-1%2A-1=1=i%5E0\"
\n" ); document.write( "\"i%5E5=i%5E4%2Ai=i=i%5E1\"
\n" ); document.write( "and as you can see values recycle based on xmod(4) (ie the remainder of dividing by 4)\r
\n" ); document.write( "\n" ); document.write( "So since you want to know \"i%5E40\" and since 40mod(4)=0 then
\n" ); document.write( "\"i%5E40=i%5E0=1\"
\n" ); document.write( "
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