JEE Advanced 2022 Mathematics question
Let be nonzero real numbers that are, respectively, the , and terms of a harmonic progression. Consider the system of linear equations
x + y + z = 1
10x + 100y + 1000z = 0
qr x + pr y + pq z = 0.
List-I (I) If , then the system of linear equations has (II) If , then the system of linear equations has (III) If , then the system of linear equations has (IV) If , then the system of linear equations has List-II (P) as a solution (Q) as a solution (R) infinitely many solutions (S) no solution (T) at least one solution The correct option is:
Solution
Write , , . Dividing the third equation by : . From the first two equations, , so the third equation reduces to . Hence the system is
See the full step-by-step solution
Create a free account to read the complete working, and practise questions like this in a timed test.
Create a free account