MonotonicityHard
Question
Let f(x) = ∫ex (x - 1)(x - 2)dx. Then ′f′ increases in the interval -
Options
A.(-∞, -2)
B.(-2, -1)
C.(1, 2)
D.(2, ∞)
Solution
f′(x) = ex(x -1)(x - 2)
f (x) is increasing in (-∞, -2) & (-2,-1)&(2, ∞)
f (x) is increasing in (-∞, -2) & (-2,-1)&(2, ∞)
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