Let g(x) = 6x²-18x+8, f₁(x) = |g(x)|, f₂(x) = |f₁(x) - P₁|, f3(x) = |f₂(x) - P₂| and if P₁ = 7 then the range of P₂ such that

Question

Let
g(x) = 6x²-18x+8, f₁(x) = |g(x)|, f₂(x) = |f₁(x) - P₁|,
f3(x) = |f₂(x) - P₂|
and if
P₁ = 7
then the range of
P₂
such that
f3(x)
has exactly 10 points of non-
differentiability is,
(A).
(1,5,7)
(B).
[2,5,8]
(C).
[2,9]
(D).
(1,8)

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