log(U2) + log(U3)+log(U4) = 6.log(3)
log(U2.U3.U4) = log(3⁶)
U2.U3.U4 = 3⁶
ar.ar².ar³ = 3⁶
a³.r⁶ = 3⁶
(ar²)³ = 3⁶
ar² = 3²
U3 = 9
4. f(g(x)) = x, f(10) = ? <= keterangan : g(x) itu fungsi akar yang di soal tadi
g(x) = 10
30/(√(7+√(2x))) = 10
3 = √(7+√(2x))
9 = 7+√(2x)
2 = √(2x)
4 = 2x
x = 2
f(10) = f(g(2))
f(g(2)) = 2
f(10) = 2
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log(U2) + log(U3)+log(U4) = 6.log(3)
log(U2.U3.U4) = log(3⁶)
U2.U3.U4 = 3⁶
ar.ar².ar³ = 3⁶
a³.r⁶ = 3⁶
(ar²)³ = 3⁶
ar² = 3²
U3 = 9
4. f(g(x)) = x, f(10) = ? <= keterangan : g(x) itu fungsi akar yang di soal tadi
g(x) = 10
30/(√(7+√(2x))) = 10
3 = √(7+√(2x))
9 = 7+√(2x)
2 = √(2x)
4 = 2x
x = 2
f(10) = f(g(2))
f(g(2)) = 2
f(10) = 2