Teaching DSSSB TGT Mock Test 2025 Mathematics Differential Calculus Applications of Derivatives

Find the intervals in which the function f given by f(x) = x² - 4x + 6 is strictly increasing :

1

(-∞, 2) ∪ (2, ∞)

2

(2, ∞)

3

(-∞, 2)

4

(-∞, 2] ∪ (2, ∞)

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