The function f(x)=17-9x+6x^2-x^3 is strictly increasing in the interval, is: Option 1: x Option 2: x(-∞,-1][3,∞) Option 3: x(-∞,1][3,∞) Option 4: x[1,∞)

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CUET Mathematics - The function f(x)=17-9x+6x^2-x^3 is strictly increasing in the interval, is: | PYQs + Solutions

CUET Mathematics 2026 30th May Shift 1

Calculus

Medium

applied

$\forall x\in\mathbb{R}$

$x\in(-\infty,-1]\cup[3,\infty)$

$x\in(-\infty,1]\cup[3,\infty)$

$x\in[1,\infty)$

✅ Correct Option: Drop