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# Linear Approximation of Square Root Function at 4

SVCALC-JEM8RY

Determine the linear approximation for $f(x)=\sqrt{x}$ at $x=4$.

A

$\cfrac{1}{2 \sqrt{x}}$

B

$x$

C

$2+\cfrac{x-4}{4}$

D

$4+\cfrac{x-4}{4}$