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School Survival Forums / Learning, Youth Rights and School Survival / School Talk v / Are you guys good at math.

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Are you guys good at math.
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SaintVicious Offline
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Post: #31
RE: Are you guys good at math.

calculus was a bitch
03-26-2012 03:11 AM
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LOON_ATTIC Offline
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Post: #32
RE: Are you guys good at math.

(03-24-2012 10:51 PM)aCol Wrote:  (2x)^3*8-4x = -4x-(2*(cos(81)x))/3

Now solve, my minions! Solve this term!

(2x)^3*8-4x = -4x-(2*(cos(81)x))/3

8x^3*8 = -(2cos(81)x)/3
8x^3*24 = -2cos(81)x
8x^3*12 = -cos(81)x
8x^2*12 = -cos(81)
96x^2 = -cos(81)
x^2 = -cos(81)/96
x = sqrt(-cos(81)/96)

am i doing it right?
If the cosine's in degrees:
x = sqrt((-cos(81 * (pi / 180))) / 96) = 0.0403673838i

if it's in radians
x = 0.0899470899i

Shit doesn't even have a real solution.

I might be taking AP Calculus BC next year... well, at least I'll probably only have 3 classes.
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(This post was last modified: 03-26-2012 04:36 AM by LOON_ATTIC.)
03-26-2012 04:17 AM
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Prince Rilian Offline
attic fan

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Post: #33
RE: Are you guys good at math.

(03-24-2012 10:51 PM)aCol Wrote:  (2x)^3*8-4x = -4x-(2*(cos(81)x))/3

Now solve, my minions! Solve this term!

Cosine? NTY.
I put it into an equation solver online and it gave me x=0. Whatever.
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Het leven is goed.

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03-26-2012 02:50 PM
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Marlena403 Offline
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Post: #34
Are you guys good at math.

I like math, but only because of a teacher. Plus I'm not good at maths because I didn't pay attention in class until I went to Year 9. I hated maths back then, but I don't anymore.
10-29-2016 09:55 AM
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