Differential equations question

[jeanette]

If anyone could help me on the attached question, it would be much appreciated

How do you express dx/dt as a function of x only?

[brightsky]

The surface area of the water remains constant at any .



So

Hope this is right. :p

[98.40_for_sure]

There you go

I've done this question a few ways but i don't know how to explain it to you or type it on the computer

Personally, i think the way the solution i attached is not the best way

[TrueTears]

The surface area of the water remains constant at any .



So

Hope this is right. :p

no surface area does not stay constant because if the water is being drained, the shorter side width is constantly decreasing.

[brightsky]

The surface area of the water remains constant at any .



So

Hope this is right. :p

no surface area does not stay constant because if the water is being drained, the shorter side width is constantly decreasing.

Ooh yeah..true, true.

[jeanette]

thank you thank you!