Question: calculus I for maple

having trouble with maple commands

for the following :

a) horizontal asymptote? i think we use this command

Limits(f(x), x=+infinity)

Limits(f(x), x=-infinity)

(b) V.asymptote?

dunt know what command to use for this

(c)  finding max values?

i think we use this command

maximum(f(x), x=a..b)

(d) Points of inflection

I don't know which maple command to use for this

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