Question

Find f prime of x when f(x) = sqrt(x) + 9/x.

Answer 1

Step-by-step explanation:

But this can be done much easily by this way:

f(x) =

√

9−x

=(9−x)1/2 f′(x) =−

1

2

(9−x)−1/2 =−

1

2

√

9−x

Answer 2

Step-by-step explanation:

f(x)=√9-x

=(9-x)1/2f(x)

=(9-x)-1/2

=1/2√9-2