MathematicsMedium175×since 2002Q2656Let 'a' be a real number such that the function f(x) = ax² + 6x −-− 15, x ∈\in∈ R is increasing in (−∞,34)\left( { - \infty ,{3 \over 4}} \right)(−∞,43) and decreasing in (34,∞)\left( {{3 \over 4},\infty } \right)(43,∞). Then the function g(x) = ax² −-− 6x + 15, x∈\in∈R has a :Alocal maximum at x = −-− 34{{3 \over 4}}43Blocal minimum at x = −-−34{{3 \over 4}}43Clocal maximum at x = 34{{3 \over 4}}43Dlocal minimum at x = 34{{3 \over 4}}43Check answerSkip