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Thank you for explaining the one-step test. I think you are better than the textbook. Straight to the point.
At 8:50 suppose c=ab, then how do we know that c^2=e? Similar argument for closure of inverses too. Please guide
We only know that if a=(a inverse) and b=(b inverse)
hello,can u help me pls with one task, can i write to u personally,it for my exam and if i need to pay smth i will do it
Of course not.
Thank you for explaining the one-step test. I think you are better than the textbook. Straight to the point.
At 8:50 suppose c=ab, then how do we know that c^2=e? Similar argument for closure of inverses too. Please guide
We only know that if a=(a inverse) and b=(b inverse)
hello,can u help me pls with one task, can i write to u personally,it for my exam and if i need to pay smth i will do it
Of course not.