The interval in which the function f(x) = -x^2 - 2x + 18 is decreasing is : Option 1: (-∞, -1) Option 2: (-3, ∞) Option 3: (-1, ∞) Option 4: (-∞, -2]

The answer is '(-1, ∞)'. View full solution:

CUET Mathematics - The interval in which the function f(x) = -x^2 - 2x + 18 is decreasing is : | PYQs + Solutions

CUET Mathematics 2026 19th May Shift 2

Calculus

Easy

applied

$(-\infty, -1)$

$(-3, \infty)$

$(-1, \infty)$

$(-\infty, -2]$

✅ Correct Option: 3

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D.	$y = -x$	IV.	increasing on $(-\infty, \infty)$

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