JEE Math Practice Question
If a variable line, 3x + 4y – $$\lambda $$ = 0 is such that the two circles x2 + y2 – 2x – 2y + 1 = 0 and x2 + y2 – 18x – 2y + 78 = 0 are on its opposite sides, then the set of all values of $$\lambda $$ is the interval :
- A.(23, 31)
- B.(2, 17)
- C.[13, 23]
- D.[12, 21]
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