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Misc 23 - Normal to x2 = 4y passing (1,2) is (a) x + y = 3

Misc. 23 - Chapter 6 Class 12 Application of Derivatives - Part 2
Misc. 23 - Chapter 6 Class 12 Application of Derivatives - Part 3

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Misc 23 The normal to the curve π‘₯^2=4𝑦 passing (1, 2) is (𝐴) π‘₯ + 𝑦 = 3 (𝐡) π‘₯ – 𝑦 = 3 (𝐢) π‘₯ + 𝑦 = 1 (𝐷) π‘₯ – 𝑦 = 1Since (1, 2) lies on normal, it will satisfy its equation Option 1: 𝒙+π’š=πŸ‘ Putting π‘₯=1 & 𝑦=2 in equation 1 +2=3 3=3 This is true So, it is the equation of Normal Option 2: π’™βˆ’π’š=πŸ‘ Putting π‘₯=1 & 𝑦=2 in equation 1 βˆ’2=3 βˆ’1=3 This is false So, it is not equation of Normal Option 3: 𝒙+π’š=𝟏 Putting π‘₯=1 & 𝑦=2 in equation 1 +2=1 3=1 This is false So, it is not equation of Normal Option 4: π’™βˆ’π’š=𝟏 Putting π‘₯=1 & 𝑦=2 in equation 1 βˆ’1=1 0=1 This is false So, it is not equation of Normal Hence, Correct Answer is (A)

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Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 12 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.