Help with fractions (1 Viewer)

[abdog]

Sketch y = √x+5 for -4<x<4 and find its maximum and minimum values.

I differentiated it to get stationary points. But I ended up with this:
1/x+5 = 0

 

[GoldyOrNugget]

yes. start by multiplying all terms by x.

 

[Shadowdude]

Do you mean or

If the former, solution is

If latter, no solution. To convince yourself, I suppose you could graph the function.

 

[abdog]

Can you show me how? Because after multiplying all terms by x, i get x=0. Which is weird.

 

[abdog]

Do you mean or

If the former, solution is

If latter, no solution. To convince yourself, I suppose you could graph the function.

it's the latter... I'll post the question.