Question
न्यूटन-रैफसन विधि द्वारा समीकरण का सन्निकट मूल ज्ञात कीजिए।
लेकर केवल 3 पुनरावृत्तियाँ कीजिए।
ख) द्विघाती समीकरण के मूल
और
दिए गए हैं। दिखाइए कि पुनरावृत्ति
के समीप अभिसरित होगी जब
के मान ज्ञात कीजिए।
Answer :
Word Count : 452
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Skip in 10
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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