Question

Под корнем х-х , f (9) = ?

Answer 1

f`(x)=1/(2√x)-1........................

f`(9)=1/(2*3)-1=1/6-1=-5/6

Answer 2

To find the value of f(9) when f(x) = √x - x, we simply need to substitute x = 9 into the function.

f(9) = √9 - 9

Now, let's calculate:

f(9) = 3 - 9

f(9) = -6

So, the value of f(9) is -6.