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Mathematics 15 Online
OpenStudy (erinweeks):

Someonee helpp (: Obtain the graph of h by adding or subtracting the corresponding y-coordinates on the graphs of f and g in the same rectangular coordinate system. f(x) = 3 sin x, g(x) = sin 2x; h(x) = (f + g)(x)

OpenStudy (erinweeks):

@jim_thompson5910 can you pleasee help mee?

jimthompson5910 (jim_thompson5910):

in geogebra, type in 3*sin(x) + sin(2x)

jimthompson5910 (jim_thompson5910):

the reason why it works is because you're just adding the functions f and g

OpenStudy (erinweeks):

alright

OpenStudy (erinweeks):

but my graphs again are in pi :(

jimthompson5910 (jim_thompson5910):

right click on the background and go to "graphics" go to x-axis and click the "distance" checkbox and pick pi/2 in the dropbox

jimthompson5910 (jim_thompson5910):

then hit ok

OpenStudy (erinweeks):

i clicked thr backround and it didnt do anything

jimthompson5910 (jim_thompson5910):

right click

OpenStudy (erinweeks):

i dont see a pi/2

jimthompson5910 (jim_thompson5910):

in the drop box next to distance

jimthompson5910 (jim_thompson5910):

in the x axis section

jimthompson5910 (jim_thompson5910):

btw they use the pi symbol instead of the word pi

OpenStudy (erinweeks):

i dont see a distance i right click and go to y-axis and it doesnt say distance it just shows me the numbers

OpenStudy (erinweeks):

A

OpenStudy (erinweeks):

B

OpenStudy (erinweeks):

C

OpenStudy (erinweeks):

D

jimthompson5910 (jim_thompson5910):

ok let me graph it

jimthompson5910 (jim_thompson5910):

see attached

OpenStudy (erinweeks):

So its A (:

jimthompson5910 (jim_thompson5910):

hmm close, but not quite

jimthompson5910 (jim_thompson5910):

look at the shape of the curve

OpenStudy (erinweeks):

D(:?

jimthompson5910 (jim_thompson5910):

much better

OpenStudy (erinweeks):

thank you so much Jim (:

jimthompson5910 (jim_thompson5910):

you're welcome

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