Hi, anyone has any practical tips to solve this type of topology questions within two minutes?
My long way of proving is as follows:
I) Let .
.
Case 1: If , then
Case 2: If , then similarly .
Conversely, if ,
fireandgladstone wrote:Also, if you're going for speed, notice that you only needed to check claim 2 to get the answer (based on the available answers).
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