Question

How to take the derivative of f(x)= square root x+2, x=7

Answer 1

\[\sqrt{x+2}\]?

Answer 2

\[\sqrt{x+2}\] x= 7

Answer 3

\[\sqrt{x+2}=(x+2)^{1/2}\]
power rule / chain rule gets
\[dy/dx=(1/2)(x+2)^{-1/2}=1/(2\sqrt{x+2})\]

Answer 4

sub in 7 to get \[1/2\sqrt{9}\]= 1/(2x3) = 1/6

Answer 5

Thank you it has help me alot