Finding lim f(x) as x->+/- infinity?

Thread starter mimitka
Start date Feb 7, 2009
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Infinity

Feb 7, 2009

mimitka

Finding lim f(x) as x-->+/- infinity?

f(x)= x^(5/3)-5x^(2/3)

Need to find limit f(x) as x-->+infinity, and x-->-infinity?

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Feb 7, 2009

scorpion990

Which term dominates as x approaches +/- infinity?

Feb 8, 2009

HallsofIvy

Science Advisor

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Factor out x^5/3: f(x)= x^5/3(1- x^-1) The limit of 1- x^-1, as x goes to plus or minus infinity should be pretty easy. What does that tell you ?

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