Q. 1 M4.1( 7 Votes )

# Using differentia

Answer :

Consider y =

Let x = 81 and Δx = 0.5. Then, we get

Δy =

=

⇒ = Δy + 3

Now, dy is approximately equal to Δy and is given by:

dy =

= 0.0046

Therefore, the approximate value of is 3.0046.

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