Consider y =
Let x = 27 and Δx = -1. Then, we get
Δy = (x+∆x)1/3 - (x)1/3
= (26)1/3 - 3
= (26)1/3 = Δy + 3
Now, dy is approximately equal to Δy and is given by:
Therefore, the approximate value of is 2.9629.
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