Please solve RD Sharma class 12 chapter 28 The Plane exercise very short answer type question 13 maths textbook solution
Answer:
3x + 2y - z = 3
Hint:
Plane parallel to 3x + 2y - z = 7 is 3x + 2y - z = λ
Given:
Plane passing through (2,-1,1) and ? to 3x + 2y - z = 7
Solution:
3x + 2y - z = 7 ...(i)
∴ Eqn of parallel to (i)
3x + 2y - z = λ ...(ii)
(ii) Passes through (2,-1,1)
3(2) + 2(-1) - (1) = λ
λ = 3
∴ Eqn. (ii) Become 3x + 2y - z = 3