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Ex 7.9, 2 - Find defnite integral 1/x dx from 1 to 2 - Definate Integration - By Formulae


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Ex 7.9, 2 - Chapter 7 Class 12 Integration - NCERT Solution Integrate ∫ 2 -> 1 1/x dx Step 1 :- F(x) = ∫ 1/x dx = log |x| Hence F(𝑥)=𝑙𝑜𝑔|𝑥| ∫1_2^3▒1/𝑥 𝑑𝑥=𝐹(3)−𝐹(2) =𝑙𝑜𝑔|3|−𝑙𝑜𝑔|2| =𝑙𝑜𝑔|3/2| (𝑈𝑠𝑖𝑛𝑔 log⁡A−log⁡B=𝑙𝑜𝑔(A/B)) =𝐥𝐨𝐠⁡ 𝟑/𝟐 (𝐴𝑠 3/2 𝑖𝑠 𝑝𝑜𝑠𝑖𝑡𝑖𝑣𝑒)

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Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 12 years. He provides courses for Maths and Science at Teachoo.