CUET Preparation Today
CUET
-- Mathematics - Section B1
Relations and Functions
The solution of the inequality $\frac{x+1}{x+2}≥1$ is:
(-2, ∞)
(-∞, -2)
(2, ∞)
(-∞, -2]
$∵\frac{x+1}{x+2}≥1$ ⇒ $\frac{(x+1)(x+2)^2}{x+2}≥(x+2)^2$
⇒ x2 + 3x + 2 ≥ x2 + 4x + 4
⇒ 3x - 4x ≥ 4 - 2
⇒ -x ≥ 2 ⇒ x ≤ - 2