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Question

Solve the following inequality:
loga(18ax)2(1x)(aϵR)

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Solution

loga(18ax)2(1x)(aϵR)
Here, 18ax>0 & a>0
18ax
loga8x
xloga8xϵ(loga8,)
For (a>1)
loga(18ax)2(1x)
18axa2a2x
a2x8axa2
a2x8axa20
axϵ(,8216+a22][8+216+a22,)
axϵ(,416+a2][4+16+a2,)
xϵ[loga(4+16+a2),)
For aϵ(0,1)
loga(18ax)2(1x)
(18ax)a2a2x
a2x8axa20
axϵ[8216+a22,8+216+a22]
axϵ[416+a2,4+16+a2]
axϵ(0,4+16+a2]
xϵ(,loga(4+16+a2)]

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