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= 4 - 1/4
= 3
8.
maka : a = c
9. Log 1 = 0
Log 1 = Log (10/10)
= Log 10 - Log 10
= 0
11. jika Log a = p
2p²+p = 6
2p²+p-6 = 0
(2p-3)(p+2) = 0
2p-3 = 0 dan p+2 = 0
p = 3/2 p = -2
utk p = 3/2
Log a = 3/2
Log a = Log 10³/²
a = 10³/²
= √10³
= 10√10
utk p = -2
Log a = -2
= Log 10⁻²
a = 10⁻²
= 1/100
12.
jika Log p = P, Log q = Q
maka :
6P² + PQ = Q²
6P² +PQ - Q² = 0
(3P - Q) (2P + Q) = 0
3P-Q = 0 dan 2P+Q = 0
3P = Q 2P = -Q
P = 1/3Q P = -1/2 Q
Log p = 1/3 Log q Log p = -1/2 Log q
= Log q¹/³ = Log q⁻¹/²
p = q¹/³ p = q⁻¹/²
= ∛q = 1/√q
= 1/q √q