The height...

mathcalculushelp · #1 $Old$ November 16th, 2009, 07:14 PM

The height of the water in the harbor of a coastal town is a periodic function of time.The height (in feet) is approximated by

h(t)=18+17.8sin(πt/6) , where t is time in hours since midnight.

a.when does high tide occur?what is the water height at high tide?

b.when does low tide occur ? what is the water height at low tide?

c.calculate h'(14).interpret the result in terms of time of day and water height in the harbor.

Evales · #2 $Old$ November 16th, 2009, 11:31 PM

Are you allowed to use graphics calculators (where you can plot graphs) in your subject? Because this question would be made simple if you were.

mathcalculushelp · #3 $Old$ November 18th, 2009, 01:14 PM

Yes we can use calculators.But how would that answer this question?
Could you pls suggest something?Iam stuck..