Talk:06-240/Homework Assignment 1: Difference between revisions
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I don't see why <math>a*a^2=1</math> implies <math>a=1</math>. --[[User:Drorbn|Drorbn]] 06:16, 22 September 2006 (EDT) |
I don't see why <math>a*a^2=1</math> implies <math>a=1</math>. --[[User:Drorbn|Drorbn]] 06:16, 22 September 2006 (EDT) |
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because <math>b=a^{-1}=a^2</math>, if ab=1, why shouldn't <math>a^{-1}*a^2=1</math>? |
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Revision as of 15:58, 22 September 2006
What information should be included on the homework assignments besides the answers to the assignment? Is student name, Math 240, Homework Assignment 1 and date sufficient? MC
Yes. --Drorbn 14:50, 15 September 2006 (EDT)
Q4
i have a question on Q4. for the part a^-1=a^2, if it's true, then a*a^2=1, which makes a=1....but a can't be 1 right?
I don't see why implies . --Drorbn 06:16, 22 September 2006 (EDT)
because , if ab=1, why shouldn't ?
