f(x)= square root (X) - 2x

Stupid error I made and I lost myself. Can someone assist please?

Once I got the dirivative what do I need to do next?

(1/2x)^-1/2

------------ = 1/2

1/2

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- March 31st 2010, 08:18 PMsderosa518Mean Value Theorem
f(x)= square root (X) - 2x

Stupid error I made and I lost myself. Can someone assist please?

Once I got the dirivative what do I need to do next?

(1/2x)^-1/2

------------ = 1/2

1/2 - March 31st 2010, 08:23 PMProve It
- March 31st 2010, 08:27 PMsderosa518
Use the mean value theorem

f(x)= square root (x) - 2x [0,4]

Sorry about the wrond input. I know that I am going through the right path, but I got lost. - March 31st 2010, 08:37 PMProve It
.

You need to find .

.

.

.

So by the Mean Value Theorem:

.

So by the Mean Value Theorem:

.