anonymous
  • anonymous
Am I typing this into my calculator correctly?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
I have this problem, |dw:1360532525098:dw|
anonymous
  • anonymous
And I type it in my calculator like this,
anonymous
  • anonymous
-(3/4)sin(x-(pi/4)) But when I graph it, its on none of my answer choices

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More answers

anonymous
  • anonymous
Are you in radian mode?
anonymous
  • anonymous
Anyhow, try this graph: http://www.wolframalpha.com/input/?i=y%3D-%283%2F4%29sin%28x-%28pi%2F4%29%29
anonymous
  • anonymous
Yes
jim_thompson5910
  • jim_thompson5910
also make sure you have the right window to see things so use zoom trig to get a better look (that usually works)
anonymous
  • anonymous
I zoomed in but it shows that the curve cuts through the center, which isnt on any of my choices
jim_thompson5910
  • jim_thompson5910
it's not supposed to cut through the center because of the phase shift that moves it to the right a bit normally sine graphs go through the origin, but not this one
anonymous
  • anonymous
|dw:1360532870601:dw| This is what I get when I zoom in,
jim_thompson5910
  • jim_thompson5910
you should have something like this |dw:1360533064327:dw|
jim_thompson5910
  • jim_thompson5910
here's a better look at the actual graph (see attached image)
anonymous
  • anonymous
I no where near got that, did you type the same exact thing I typed in?
jim_thompson5910
  • jim_thompson5910
yes I typed in (-3/4) sin(x - pi/ 4)
jim_thompson5910
  • jim_thompson5910
try using 3.14 in place of pi and see if that changes anything
anonymous
  • anonymous
When I typed in exactly what you just wrote it worked, maybe it was my choice of placing the parenthesis?
jim_thompson5910
  • jim_thompson5910
maybe, hmm wish i could see your calculator before and after, but oh well
jim_thompson5910
  • jim_thompson5910
glad you got it working though
anonymous
  • anonymous
I can re type what I wrote in & take a picture if you would like?
jim_thompson5910
  • jim_thompson5910
sure that would be great, thanks
anonymous
  • anonymous
Ah, my apologies, I typed in mine ( -(3/4)sin(x-(pi/4)) ) & I used the negative sign instead of the subtraction sign between the x & pi
jim_thompson5910
  • jim_thompson5910
oh so that would have made x-pi/4 to be -pi/4*x i see now
anonymous
  • anonymous
Yes, if you typed in what I had & instead of using the subtraction symbol & the negative one instead you would of got what I got
jim_thompson5910
  • jim_thompson5910
yeah I'm getting what you got now, such a small error that I wouldn't have even thought about it lol
anonymous
  • anonymous
Yeah, one small error completely changes the whole graph haha. I noticed it when I was re-typing my problem in & it came out right. Had me confused. Anywho, thank you for help.!
jim_thompson5910
  • jim_thompson5910
you're welcome

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