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Additional Math Help HERE ONLY...!

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jellybeans:

--- Quote from: cooldude on June 02, 2010, 05:40:19 pm ---yeah, if u get more than one value it basically tells u that the particle passes the origin at more than one point, i.e. it moves first in the positive direction and then in the negative direction, and then u have to find the distance travelled in the positive and the negative direction, and theres also one more way to find if the particle goes in the positive direction, if u find the maximum displacement and it comes to a value not equal to ur final displacement, i.e. in this q if the maximum displacement is not -25m then u get to knw that the particle has travelled in the positive direction also, for example in this u get the maximum displacement at t=5, i.e. x=7.5m, thus u get to knw that the particle has also travelled in the positive direction and u can take the movement in the positive direction into account

--- End quote ---

hahaha, okay! thanks ;D


--- Quote from: J.Darren on June 02, 2010, 05:41:40 pm ---x - q = px / y

(x - q) / x = (px / y) * (1 / x)

(x - q) / x = p / y

1 - q / x = p / y

y = p / (1 - q / x)

would it works ?

--- End quote ---

lol sry umm ..checkk teh ms..  :-\

J.Darren:
No idea lol, but I don't presume those sort of Qs would appear in this year's paper, somewhat beyond our scope ...

jellybeans:

--- Quote from: J.Darren on June 02, 2010, 05:52:34 pm ---No idea lol, but I don't presume those sort of Qs would appear in this year's paper, somewhat beyond our scope ...

--- End quote ---

LOL? are you sureeeee.. ? hahaha thanks anyways! ;) ;)

Ghost Of Highbury:
px = xy - qy

qy  = xy-px

qy = x(y-p)

x = (qy)/(y-p)

(reciprocal of both sides)

1/x = (y-p)/(qy)

1/x = y/qy - p/qy

1/x = 1/q - (p/q)(1/y)

1/x = (1/y)(-p/q) + 1/q

  y  =  xm + c 

y = 1/x

x = 1/y

m = (-p/q)

c = (1/q)

cooldude:

--- Quote from: jellybeans on June 02, 2010, 05:46:40 pm ---hahaha, okay! thanks ;D

lol sry umm ..checkk teh ms..  :-\

--- End quote ---

the first one is impossible, the one above the table, ill show u the explanation (ill go backwards)-->
1/y=-9/px+1/p
reciprocate--> y=-px/9+p
write as single fraction--> y=(-px+9p)/9
cross multiply--> 9y=9p-px
rearrange--> 9y+px=9p

now the first one in the table-->
y=qy/x+p
now just multiply evrything by x ull get it

now the 2nd one-->
y/x=y/q-(p/q)
multiply evrything by q--> qy/x=y-p
cross multiply--> qy=xy-px
rearrange ull get it
 
and blah blah blah

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