Question

someone who knows how to write a sin/cos equation from looking at the graph please reply to this.

Answer 1

With this problem

Answer 2

@ganeshie8 @jdoe0001 @zepdrix

Answer 3

ok lets start with general sine function
\[f(x) = Asin(Bx+C)+k\]
A=amplitude
k= verical shift
B: defined by period --> B = 2pi/period
period = length of 1 cycle
C : C/B is horizontal shift

from graph you can identify these variables hence identify the equation

Answer 4

the graph is shifted upwards, thus it has a "vertical shift"
is also stretched some, so it has an "amplitude"

Answer 5

a=2 ?

Answer 6

and the regular period is shrunk, so it has a B component

Answer 7

no a=4?

Answer 8

amplitude looks like 2, if you look at the graph
you'd count from the half-way of the wave graph

because from half-up is one amplitude amount, and half-down is another

Answer 9

y=2sin(2(pi/1)

Answer 10

@fanofhelp12 , A = 4

Answer 11

ohh right... 2 above the 0 and 2 below, = 4

Answer 12

notice the vertical shift

Answer 13

a = (max-min)/2 = 4
k = (max+min)/2 = 2

Answer 14

y=4sin(2(pi)/1x)
and there is no horizontal shift and the vertical shift is 2?

Answer 15

the graph is up by 2 units, so y = 4 sin(.....) + 2

Answer 16

so the period is 1 since the period ends at one..correct?

Answer 17

correct
\[= 4\sin(2\pi x) +2\]

Answer 18

and no horizontal so yeah y=4sin(2(pi)x)+2
THANK YOU!
idk how to work opendstudy and how to give medals and such.

Answer 19

haha click the blue button "best Response"

Answer 20

unless you are on a smart phone/tablet ive heard sometimes they dont show

Answer 21

Ohhhhh so i can only give one person a medal? i cant give @jdoe0001 one too? :/

Answer 22

yep new rules...give it to @jdoe0001

Answer 23

its ok youve helped too:) thank you so much!

Answer 24

oh i see all of your responses became best response, thanks!

Answer 25

:)