Wednesday, 16 December 2015

LOGARITHMIC EQUATIONS - 6


Find x if Logx625 = 4

solution

Logx625 = 4

625 = x4 .

54 = x4 . [since 625 = 54 by prime factorization]

54 = x4 . [ powers cancel out]

x = 5

Hence x = 5

TRY THIS..................

Find y if Logy216 = 3


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