Maths paper1 O/N 2009 11

[1992]

i canot do this question. O/N 2009 11 Q10.ii)
I can get f-1(x)
but how can i get g-1(x) if theres 2 X??? full working out needed please

 

[Zohaib Sherazi]

after corss multiplying u get:

xy + 3y = 2x -1

take 3y on the other side and bring 2x here:
xy - 2x = -1 -3y

take x common:

x ( y - 2 ) = -1 - 3y

divide both sides by (y - 2)

G^-1 = (-1 - 3x) / (x - 2)

Thats it.

 

[1992]

ty dude. good explanation

 

[zahraahmed]

ohhh sorrieee i did it bymistake......................

 

[filza94]

http://notezone.net/cambridgechem/chemi ... sis%5D.pdf can sum1 go in dix page 11 n do solve n gimme answers plzzzz i cant able to slove it n it might cum for exam help mee!!!!