Find critical pt of F(x) = m sqrt(x) - ln x for constant m?

[IliveinUK]

F is the function defined by ..... F(x) = m √(x) – ln x ....
...where m is a postive constant and ... x >0

What value of constant m does f have a critical point at x=1?
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I haven't got the slightest idea so any help you can provide will be greatly appreciated...thank you so much :roll:

 

[stapel]

F is the function defined by ..... F(x) = m √(x) – ln x ....
...where m is a postive constant and ... x >0

What value of constant m does f have a critical point at x=1?

Take the derivative, set it equal to zero, and plug in the given value for x. Solve for m. :wink:

I haven't got the slightest idea....

Why is your class assigning homework like this if derivatives and critical numbers haven't yet been covered? (If they had been covered, you'd obviously have at least some idea what's going on!) :shock:

I'm afraid you need about a month of intensive tutoring (face-to-face) to learn the required background material. This is a service we cannot here provide. Please find a local qualified tutor, and set aside a few hours a week (daily would be best) for diligent instruction and self-study.

Good luck!

Eliz.