Question

@experimentX

Answer 1

@experimentX can you help?

Answer 2

I have already done problem a and b

Answer 3

For c, Is it sinusoidal?

Answer 4

16 - 32.6

Answer 5

what?

Answer 6

i don't think its sinsoidal.

Answer 7

Ive already determined a and b

Answer 8

a = 16.1

Answer 9

b = 25.36

Answer 10

can you put that data into array.

Answer 11

Im not sure how to do that

Answer 12

[16.5, ... ]

Answer 13

oh, ok

16.5,18.3, 21.8, 25.6, 29.2, 31.9, 32.6, 32.4, 30.3, 26.4, 21.3, 18.0

Answer 14

looks sinusoidal http://www.wolframalpha.com/input/?i=plot+%5B16.5%2C18.3%2C+21.8%2C+25.6%2C+29.2%2C+31.9%2C+32.6%2C+32.4%2C+30.3%2C+26.4%2C+21.3%2C+18.0%5D
but not exactly. I guess it can be called sinusoidal.

Answer 15

Ok, I think so too. you know about the stat menu in the calculator right?

Answer 16

No ...

Answer 17

This graph is not sinusoidal right? because while making a curve, it doesnt go negative and back up positive and create a pattern

Answer 18

Looks almost sinusoidal
http://www.wolframalpha.com/input/?i=plot+%5B16.5%2C18.3%2C+21.8%2C+25.6%2C+29.2%2C+31.9%2C+32.6%2C+32.4%2C+30.3%2C+26.4%2C+21.3%2C+18.0%2C16.5%2C18.3%2C+21.8%2C+25.6%2C+29.2%2C+31.9%2C+32.6%2C+32.4%2C+30.3%2C+26.4%2C+21.3%2C+18.0%5D
Check this again

Answer 19

It does look like it

Answer 20

How do I determine the values of abcd in this question?

Answer 21

you should be able to determinate that ..
measure vertical shift, horizontal shift,, period ... etc.

Answer 22

you period is 12
half of the 16.5 and 32.2 ... smallest and greatest must be your vertical shift.
Don't ask me horizontal shift.

Answer 23

(16.5 + 32.2)/2 <--- vertical shift
(32.2 - 16.5)/2 <--- horizontal shift.

Answer 24

Omg, Thank you so much experimentx, You make it so easy to understand:)

Answer 25

(32.2 - 16.5)/2 <--- **amplitude

Answer 26

horizontal shift must be around +4 (left)

Answer 27

OK, I will try to construct an equation

Answer 28

don't be so much confident about my data. try double check.

Answer 29

ok. So i think the equation would be

t = 23 [12x+4] + 32

Am I correct?

Answer 30

try graphing and compare.

Answer 31

Something is wrong, im not getting the same graph

Answer 32

http://www.wolframalpha.com/input/?i=t+%3D+%2832.4-16.5%29%2F2+sin%282pi%2F12+x%2B48%29+%2B+%2832.4%2B16.5%29%2F2
I am not so much sure.

Answer 33

Is yours 100% correct?

Answer 34

I need to know so that I can determine abcd

Answer 35

I am not sure .. looks pretty much the same.

Answer 36

Ok. Thats the closest i will ever get,

so does that mean that the values are

a= 8
b =0.52
c = 48
d = 40

Answer 37

d=24.5

Answer 38

can you put it in wolframalpha??

Answer 39

http://www.wolframalpha.com/input/?i=t+%3D+8.05+sin%280.52+x%2B48%29+%2B+24.5

Answer 40

seems similar.

Answer 41

@experimentX , how do I solve problem e?

Answer 42

how would i know??

Answer 43

Thank you for your help

Answer 44

you are welcome :)

Answer 45

wow~~~ @experimentX is so nice to you @Open2study

Answer 46

I think i misread your above statement as "How did i solve the problem?". Your equations seems fine to me. I'm gonna be offline for a while @Callisto please continue.

Answer 47

I know:) he is

Answer 48

see you guys later.

Answer 49

Thanks again:) Bye

Answer 50

Bye

Answer 51

BYE!!~~ Be Back Soon!! lol