As a result of the tide, the depthof the water in the bay varies with time. Acco

Question

As a result of the tide, the depthof the water in the bay varies with time. According to theharbormaster, the depth can be modeled by the function

d ( t ) =2.5 cos (p/6) ( t -2) + 4,where t is the number of hours since midnight, and d is the depthin meters

http://i40.tinypic.com/1zmz6zt.jpg(Picture of graph if necessary.)

I figured the amplitude is2.5

The period is 12

The phase shift is 2 units to theright, and the vertical shift is 4 units up.

Just wanted to make sure I'm rightso far. The question is:

What is the maximum and minimumdepth and when do each occur?

Explanation / Answer

take your information, and picture it as a graph. or just graph thefunction. or use the website you have to observe the graph to seewhat the min and max x values are. they appear to be 1.5, and 6.5.check by finding your zeros or use the method taught that yourteacher prefers you use. im sure it involves entering values to seewhere the value rises versus drops.

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.