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दोन निरीक्षणांसाठी, बेरीज S आहे आणि उत्पादन P आहे. या दोन निरीक्षणांचा हार्मोनिक मीन काय आहे?

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CDS Maths Previous Paper 9 (Held On: 2 Feb 2020)
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  1. \(\frac{2S}{P}\)
  2. \(\frac{S}{(2P)}\)
  3. \(\frac{2P}{S}\)
  4. \(\frac{P}{(2S)}\)

Answer (Detailed Solution Below)

Option 3 : \(\frac{2P}{S}\)
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Detailed Solution

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दिलेल्याप्रमामे:

बेरीज S आहे आणि गुणाकार P आहे.

वापरलेले सूत्र:

a आणि b = 2/(1/a + 1/b) = 2ab/(a + b) चा हार्मोनिक मध्य

गणना:

बेरीज S आहे आणि गुणाकार P आहे.

नंतर, या दोन निरीक्षणांचा हार्मोनिक मध्य = 2P/S

∴ दोन निरीक्षणांचा HM 2P/S आहे

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