Use algebra and limits to find the limits:
a) lim of x+1/x-2 as x approaches +infinity
b) lim of x^2+1/x^2 - 5 as x approaches -infinity
c) lim of x^2+1/x^3 - 2 as x approaches + infinity
d) lim of x^3+1/x^2 + 2 as x approaches - infinity
check answers by graphing the functions
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