Using differentials, find the approximate value of each of the following up to 3 places of decimal.
Consider y = 
Let x = 16 and Δx = -1. Then, we get
Δy = 
=
⇒ 
= Δy + 2
Now, dy is approximately equal to Δy and is given by:
dy = 
= -0.03125
Therefore, the approximate value of 
is -0.03125.
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