If f(x)=5x+3/4x-5,where x is not equal to 5/4,find f(f(x)).
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Answered by
21
Hy mate here is your anshwer =>
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F(x) = 5x+3 /4x-5
X ≠ 5 /4x-5
Find = fof(x) =F[F(X)]
=F[5x+3 /4x+5]
=5(5x+3 /4x-5)+3 /4( 5x+3 /4x-5)-5✔is your anshwer
I hope it help you ☺
________________
________________
F(x) = 5x+3 /4x-5
X ≠ 5 /4x-5
Find = fof(x) =F[F(X)]
=F[5x+3 /4x+5]
=5(5x+3 /4x-5)+3 /4( 5x+3 /4x-5)-5✔is your anshwer
I hope it help you ☺
Answered by
1
Answer:
Step-by-step explanation
f(f(x))= f(5x+3/4x-5)
Substitute x= 5x+3/4x-5 in f(x),
f(f(x))= [(25x + 15/4x-5) +3] / [(20x + 12)/4x-5] -5
Taking LCM in numerator and denominator,
f(f(x))= 37x/37= X
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