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Learn in your speed, with individual attention - Teachoo Maths 1-on-1 Class

Ex 4.3

Question 1 (i)
Deleted for CBSE Board 2024 Exams

Question 1 (ii) Important Deleted for CBSE Board 2024 Exams

Question 1 (iii) Deleted for CBSE Board 2024 Exams

Question 1 (iv) Important Deleted for CBSE Board 2024 Exams

Question 2 (i)

Question 2 (ii)

Question 2 (iii)

Question 2 (iv) Important

Question 3 (i) Important You are here

Question 3 (ii)

Question 4

Question 5

Question 6

Question 7 Important

Question 8 Important

Question 9 Important

Question 10 Important

Question 11

Last updated at May 29, 2023 by Teachoo

Ex 4.3 ,3 Find the roots of the following equations: (i) x β 1/π₯=3,π₯β 0 x β 1/π₯=3 (π₯(π₯) β 1 )/π₯ = 3 (π₯^2 β 1 )/π₯ = 3 x2 β 1 = 3x x2 β 3x β 1 = 0 Comparing equation with ax2 + bx + c = 0 So, a = 1, b = β3, c = β1 We know that D = b2 β 4ac D = ( β3)2 β 4Γ1Γβ1 D = 9 + 4 D = 13 Hence, roots to equation are given by x = (β π Β± βπ·)/2π Putting values x = (β (β 3) Β± β13)/(2 Γ 1) x = (3 Β± β13)/2 Hence, roots to equation are x = (3 + β13)/2 or x = (3 β β13)/2