SOLUTION: Hello! Here's my problem. for all positive values of x, the function f is defined by {{{ f(x) = x^3 - x^-2 }}} . Of the following, which is the best approximation of f(x) f

Algebra ->  Exponential-and-logarithmic-functions -> SOLUTION: Hello! Here's my problem. for all positive values of x, the function f is defined by {{{ f(x) = x^3 - x^-2 }}} . Of the following, which is the best approximation of f(x) f      Log On


   



Question 83069: Hello! Here's my problem.
for all positive values of x, the function f is defined by ++f%28x%29+=+x%5E3+-+x%5E-2++ . Of the following, which is the best approximation of f(x) for values of x greater than 1,000?
a. +x%5E3++
b. +x%5E4+
c. +x%5E5+

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
x^3 because x^-2 gets smaller as x gets larger.
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Cheers,
Stan H.