Question

Estimating period and amplitude? http://puu.sh/3cbEp.png

Answer 1

from \(-2.4\) to \(3.3\) is an interval of length \(3.3+2.4=5.7\)

Answer 2

the amplitude would be half of that

Answer 3

the amplitude of location 1 is 2.1, and the amplitude of location 2 is 2.85. right?

Answer 4

@satellite73

Answer 5

yeah i didn't look carefully
i would agree, \(2.1\) for the first one and \(2.85\) for the second

Answer 6

what about the period? and do you think i should try to write functions to represent the graph? how would i do that?

Answer 7

nah,no graph
how long from 11:30 am to 11:55 pm?

Answer 8

12 hours and 25 minutes. the average for location 1 is about 6 hours and 12 minutes between each tide. i've figured that much out

Answer 9

for the period, don't divide by 2

Answer 10

oh maybe this is a trick....

Answer 11

location 1:
period: 12 hour 25 min
amplitude: 2.1

location 2:
period: 12 hour 15 min
amplitude: 2.85

right?

Answer 12

from 11:55 pm to 6:07 am is 6 hours 12 minutes

Answer 13

period for location 2 is 12 hours 25 min again. my bad.

Answer 14

so i think it is a trick question

Answer 15

hahaha so do i.

Answer 16

i think the period for location 1 is 6 hours 12 minutes approx

Answer 17

i think the period of 12 hr 25 min is right though, because it's the time from peak to peak

Answer 18

scratch what i said, i must be tired
stick with 12 hours 25 minutes for the first one

Answer 19

for the second one i think it's the same, because 4:46 to 5:11 is 12 hours and 25 min again

Answer 20

yeah, stay with that, and amplitude of \(2.1\)

Answer 21

yeah, same period for the second one as well, 12 hours 25 minutes

Answer 22

okay awesome. thank you very much!

Answer 23

yw