Maths - Functions - one question

[ana_mujahid]

:confused:
find x if f(x) = 1

f:x -> 1-2x


^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^

how do i solve that kind of functions again

:confused:

[ammarcool]

brother just my suggestion coz i have done it long time ago.

did you tried solving it using g0f and f0g functions?

g0f=g(f(x))
f0g=f(g(x))

[ana_mujahid]

brother just my suggestion coz i have done it long time ago.

did you tried solving it using g0f and f0g functions?

g0f=g(f(x))
f0g=f(g(x))




hmm

i think i know how to do it now:


f(5) f:x-> 1-2x

therefore f:x -> 1-2(5) = -9