Answer:
f(x) = ax + b, (a #0)
no , I don't know bts.
no I bat hate them
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Sol : Let f(x) = ax+b,a<0
y = ax+b
x= a/y-b
thenf ^-1 (x) = f(x)∀x if and only if
x-b/a = ax+b
x−b/a = a^2 x+ab
(1−a^2)x = b(1+a)
(1+a)(1−a)x = b(1+a)
=> From above equation, we can see that if a=−1,b∈R and the equation will be satisfied for all x∈R.
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Answer:
f(x) = ax + b, (a #0)
no , I don't know bts.
no I bat hate them