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For this problem you can consider things such as 1/2 as the multiplicative inverse of 2. Then you have to ask, what element in Z7 is an inverse of 2? 2*4=8 and 8=1 in Z7 so a reasonable interpretation for 1/2 is 4. You can find reasonable interpretations for the other expressions in a similar fashion.<br> | For this problem you can consider things such as 1/2 as the multiplicative inverse of 2. Then you have to ask, what element in Z7 is an inverse of 2? 2*4=8 and 8=1 in Z7 so a reasonable interpretation for 1/2 is 4. You can find reasonable interpretations for the other expressions in a similar fashion.<br> | ||
--[[User:Jniederh|Jniederh]] 03:05, 11 March 2009 (UTC) | --[[User:Jniederh|Jniederh]] 03:05, 11 March 2009 (UTC) | ||
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| + | I understand what we are doing here, but what are we supposed to do for something like <math>\sqrt{-3}</math>? --[[User:Podarcze|Podarcze]] 11:34, 11 March 2009 (UTC) | ||
Revision as of 06:34, 11 March 2009
For this problem you can consider things such as 1/2 as the multiplicative inverse of 2. Then you have to ask, what element in Z7 is an inverse of 2? 2*4=8 and 8=1 in Z7 so a reasonable interpretation for 1/2 is 4. You can find reasonable interpretations for the other expressions in a similar fashion.
--Jniederh 03:05, 11 March 2009 (UTC)
I understand what we are doing here, but what are we supposed to do for something like $ \sqrt{-3} $? --Podarcze 11:34, 11 March 2009 (UTC)
