Jawabanmu

2014-05-01T08:35:00+07:00
ada cara cepat .. b+ax/cx+d = b-dx/cx-a
jadi 2+2x/2x-1
=-(-1)+2x/2x-2

F(x) sm dgn 2+x / 2x-1

y sm dgn 2+x / 2x-1
y(2x-1) sm dgn 2+x
2xy-y sm dgn 2+x
2xy-x sm dgn 2+y
x(2y-1) sm dgn 2+y
x sm dgn 2+y / 2y-1
f'-1 (x) sm dgn 2+x / 2x-1

( ket, ' : pangkat )