14: D( f ) = (0,∞); f is continuous there.
y-intercept: f (0) not possible; x-intercepts: f = 0 gives x = 1.
f is not symmetric since D( f ) is not symmetric.
Limits at endpoints:

Interpretation as asymptotes:
Not a vertical asymptote at x = 0.
No horizontal asymptote at ∞, but a chance for oblique.

So no oblique there.

Now determine monotonicity using f ′.

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Answer