f(x)=square root of x; Find F'(9).
Here what i did. I simple plugged 9 in for x, and i got 3, but thats obviously wrong. The reason i tried this is because at first i tried to find using the derivative formula but i got 0/0 which is wrong also. where did i go wrong?
Its a graph. The graph is the shape of a "v" opening down. The point of the, where the two lines meet to form the v, are on the y axis at 1, the line on the left side runs through the point -1, and the line on the right side runs through the point 1.
Now, i couldn't figure this out for the love of God, i have two problems like this but if you could help me with this one, i'm sure i'll be able to do the other one on my own