In other words, we'll have to evaluate the limit of the
fraction, if x approaches to 0:
We'll replace x by 0, we'll
get:
lim [(x - 64)^(1/3) - 4]/x = [(0 - 64)^(1/3) -
4]/0
lim [(x - 64)^(1/3) - 4]/x = [(-64)^(1/3) -
4]/0
But (-64)^(1/3) = -4
lim
[(x - 64)^(1/3) - 4]/x = (-4 - 4)/0
lim [(x - 64)^(1/3) -
4]/x = -8/0
lim [(x - 64)^(1/3) - 4]/x = -
infinite
When x approches to 0, the value of
the fraction [(x - 64)^(1/3) - 4]/x tends to -
infinite.
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