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Math question, brainiacs!
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Karma: 88
y = 2sin(4x) - 5
Find the vertical shift and the horizontal and vertical compression/expansion from the original equation:
y = sin(x)
This is worth 10, 000 bonus marks.. which pretty much means I don't have to do the rest of the course haha. It might be impossible cause I don't know why he's offering so much bonus.
Anyways, have a shot at it if you like..
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as far as i can tell the vertical shift is 5 down, and the compression is a multiplied by 2. I plugged it into my graphic calculator and thats wat it showed. Thats sounds too easy tho
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Yeah, def too easy.. cause if you make a table of values for y = sin(x) and times the y coordinates by 2 and then add 5 it doesn't match up with the y coordinates for the manipulated equation..
I actually figured out that the number 7.99 seems to work nicely as the vertical expansion buuut I can't seem to get taht number out of the equation..
if taht makes sense?
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well im looking at the calculator, and this is wat its showing me.
y1 = 2sin(4x)-5
y2 = sin(x)
x y1 y2
0 -5 0
1 -4.86 0.01745
2 -4.72 0.0349
3 -4.584 0.05234
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are you in math 12?
because it has nothing to do with calculations at all. the answers are in the equation.
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Haha, we're stupid...
Vertical shift: -5
Horizontal compression: 1/4
Vertical expansion: 2
I was doing the right thing but I had my calc in degrees so the answers never worked out right! Haha, oh well at least I got it eventually
I hope this means I get 10 000 bonus marks cause that would bring me up to.. hm, I dunno, 1000%..
siiiiick
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i was about to post that exact thing. DARN!
I was sure it would get me e-cool points!
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yeah, math 12
weve had like 3 classes tho and havent started yet.. just review so far.. but he gave us this question for fun i guess? ive never seen a sin graph before haha
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welcome to 5 months of number HELL
math 12 sucks, but just think... no more math after january, ever, besides baisic addition/subtraction.
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haha i'd like to think that.. too bad i'm goin to college and will probably end up takin it again
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ahh, shitty. well just know that the question you just asked is pretty much the easiest question in math 12. enjoy!
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I'm doing the exact same stuff right now in math.
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haha yeah i wish i could go back to that stuff, now i'm in university and i'm doing calculus (which isn't that hard anyways, but still).
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you think math 12 sucks, wait till calc in college!
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haha the answer was in the equation all along, gotta love circular functions.
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