Using differentials, find the approximate values of:
Find the approximate values of
Let y =√x.
Let x =25 and Δx = 2.
As y = √x.
⇒
We, know
∴
∴ Δy = 0.2
Also,
Δy = f(x+Δx)-f(x)
⇒ 0.2 = √27 – 5
⇒ √27 = 5.2