Question

न्यूटन-रैफसन विधि द्वारा समीकरण equation का सन्निकट मूल ज्ञात कीजिए। equation लेकर केवल 3 पुनरावृत्तियाँ कीजिए। 
ख) द्विघाती समीकरण equation के मूल equation और equation दिए गए हैं। दिखाइए कि पुनरावृत्ति equation equation के समीप अभिसरित होगी जब equation के मान ज्ञात कीजिए। 

09 Jan 2026
Answer :
Word Count : 452
समीकरण ( 2x^3 = 3x + 6 ) को न्यूटन-रैफसन विधि से हल करने के लिए पहले इसे शून्य के रूप में लिखते हैं: [ f(x) = 2x^3 - 3x - 6 ] और इसका अवकलज: [ f'(x) = 6x^2 - 3 ] न्यूटन-रैफसन पुनरावृत्ति सूत्र है: [ x_{n+1} = x_n - \frac{f(x_n)}{f'(x_n)} ] प्रारंभिक अनुमान ( x_0 = 2 ) लेते हैं। पहली पुनरावृत्ति: [ f(2) = 2(2^3) - 3(2) - 6 = 16 - 6 - 6 = 4 ] [ f'(2) = 6(2^2) - 3 = 24 - 3 = 21 ] [ x_1 = 2 - \frac{4}{21} = 2 - 0.190476 \approx 1.8095 ] दूसरी पुनरावृत्ति: [ f(1.8095) = 2(1.8095^3) - 3(1.8095) - 6
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