这个数学里就叫做充分条件,if and only if / iff。
满足了充分条件,结论当然就正确了,跟单变量思维有什么关系?
这个数学里就叫做充分条件,if and only if / iff。
满足了充分条件,结论当然就正确了,跟单变量思维有什么关系?
•
if "三条边相等", then "两个三角形全等", if "两条边与夹角相等", then "两个三角形全等"
-bebe2014-
♂
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08/23/2019 postreply
07:45:53
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