FunctionHard

Question

Range of f(x) = ln (3x2 - 4x + 5) is

Options

A.
B.(B) [ln 10 , ∞)
C.
D.

Solution

f(x) = loge (3x2 - 4x + 5)
3x2 - 4x + 5 ≥
⇒  ln (3x2 - 4x + 5) ≥ in
[∵ ln is an increasing function]
∴  Range is

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