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gjhfdfg

  • one year ago

Am I typing this into my calculator correctly?

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  1. gjhfdfg
    • one year ago
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    I have this problem, |dw:1360532525098:dw|

  2. gjhfdfg
    • one year ago
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    And I type it in my calculator like this,

  3. gjhfdfg
    • one year ago
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    -(3/4)sin(x-(pi/4)) But when I graph it, its on none of my answer choices

  4. Zelda
    • one year ago
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    Are you in radian mode?

  5. Zelda
    • one year ago
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    Anyhow, try this graph: http://www.wolframalpha.com/input/?i=y%3D-%283%2F4%29sin%28x-%28pi%2F4%29%29

  6. gjhfdfg
    • one year ago
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    Yes

  7. jim_thompson5910
    • one year ago
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    also make sure you have the right window to see things so use zoom trig to get a better look (that usually works)

  8. gjhfdfg
    • one year ago
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    I zoomed in but it shows that the curve cuts through the center, which isnt on any of my choices

  9. jim_thompson5910
    • one year ago
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    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

  10. gjhfdfg
    • one year ago
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    |dw:1360532870601:dw| This is what I get when I zoom in,

  11. jim_thompson5910
    • one year ago
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    you should have something like this |dw:1360533064327:dw|

  12. jim_thompson5910
    • one year ago
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    here's a better look at the actual graph (see attached image)

  13. gjhfdfg
    • one year ago
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    I no where near got that, did you type the same exact thing I typed in?

  14. jim_thompson5910
    • one year ago
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    yes I typed in (-3/4) sin(x - pi/ 4)

  15. jim_thompson5910
    • one year ago
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    try using 3.14 in place of pi and see if that changes anything

  16. gjhfdfg
    • one year ago
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    When I typed in exactly what you just wrote it worked, maybe it was my choice of placing the parenthesis?

  17. jim_thompson5910
    • one year ago
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    maybe, hmm wish i could see your calculator before and after, but oh well

  18. jim_thompson5910
    • one year ago
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    glad you got it working though

  19. gjhfdfg
    • one year ago
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    I can re type what I wrote in & take a picture if you would like?

  20. jim_thompson5910
    • one year ago
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    sure that would be great, thanks

  21. gjhfdfg
    • one year ago
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    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

  22. jim_thompson5910
    • one year ago
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    oh so that would have made x-pi/4 to be -pi/4*x i see now

  23. gjhfdfg
    • one year ago
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    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

  24. jim_thompson5910
    • one year ago
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    yeah I'm getting what you got now, such a small error that I wouldn't have even thought about it lol

  25. gjhfdfg
    • one year ago
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    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.!

  26. jim_thompson5910
    • one year ago
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    you're welcome

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