õ( ) 12() 2 ȸǽǿ ̺ȣ ü Ͽ Ӵȸ ȸ ǽߴ.
̳ ȸ μ , μ 30 ʵб Ӵ ȸ 30 ߴ.
Ӵȸ ȸ ȸ ϰ Ӵȸ Ȱȭ ʵб ̺ȣ ü ǻ ûϴ Ӵȸ ȸ ʱ Ӵȸ ȸ忡 ߴ.
μ ݳ (,) Ȯ Բ Ź ̷ ϱ Ͱ ƿ Ӵȸ ȸ ǰ ͡ ߴ.
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