If S1 and S2 are respectively the sets of local minimum and local maximum points of the function, ƒ(x) = 9x4 + 12x3

Question

If S₁ and S₂ are respectively the sets of local minimum and local maximum points of the function,

ƒ(x) = 9x⁴ + 12x³ – 36x² + 25, x $ \in $ R, then :

S₁ = {–1}; S₂ = {0, 2}

S₁ = {–2}; S₂ = {0, 1}

S₁ = {–2, 0}; S₂ = {1}

S₁ = {–2, 1}; S₂ = {0}

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