Comprehension

निर्देश: निम्नलिखित सूचना को पढ़िए और आगे आने वाले दो प्रश्नों के उत्तर दीजिए:

समीकरण xy = ex-y पर विचार कीजिए

x = 1 पर

   किसके बराबर है?

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Answer (Detailed Solution Below)

Option 1 : 0
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NDA 01/2025: English Subject Test
30 Qs. 120 Marks 30 Mins

Detailed Solution

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अवधारणा:

गणना:

दिया गया है: xy = ex-y

दोनों तरफ ln लागू करने पर हमे प्राप्त होगा

⇒ y × ln x = ln (ex-y) = x – y

⇒ y × ln x = x – y

⇒ x = y × (1 + ln x)      ------(1)

x के सम्बन्ध में दोनों तरफ अवकलन करने पर, हमे प्राप्त होगा-

समीकरण (1) का प्रयोग करने पर हमे प्राप्त होगा-

इसलिए , 

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