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यदि y = x2 + 4 तथा x का मान 3 से 3.1 में परिवर्तित होता है, तब अवकलज के प्रयोग से y में परिवर्तन का सन्निकटन मान ज्ञात कीजिए।

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दिया हैं, y = x2 + 4

x = 3 रखने पर,

y = (3)2 + 4 = 9 + 1 = 13

∆x = 3.1 – 3 = 0.1

∵ y = x2 + 4

x के सापेक्ष अवकलन करने पर,

अतः y में परिवर्तन का सन्निकटन मान 0.6 हैं।

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