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Mathematics

Convert each of the following to logarithmic form:

(i) 52 = 25

(ii) 3-3 = 127\dfrac{1}{27}

(iii) (64)13(64)^\dfrac{1}{3} = 4

(iv) 60 = 1

(v) 10-2 = 0.01

(vi) 4-1 = 14\dfrac{1}{4}

Logarithms

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Answer

(i) Given,

⇒ 52 = 25

⇒ log5 (25) = 2.

Hence, logarithmic form is log5 (25) = 2.

(ii) Given,

⇒ 3-3 = 127\dfrac{1}{27}

⇒ log3 (127)\Big(\dfrac{1}{27}\Big) = -3.

Hence, logarithmic form is log3 (127)\Big(\dfrac{1}{27}\Big) = -3.

(iii) Given,

(64)13(64)^\dfrac{1}{3} = 4

⇒ log64 4 = 13\dfrac{1}{3}.

Hence, logarithmic form is log64 4 = 13\dfrac{1}{3}.

(iv) Given,

⇒ 60 = 1

⇒ log6 1 = 0.

Hence, logarithmic form is log6 1 = 0.

(v) Given,

⇒ 10-2 = 0.01

⇒ log10 (0.01) = -2.

Hence, logarithmic form is log10 (0.01) = -2.

(vi) Given,

⇒ 4-1 = 14\dfrac{1}{4}

⇒ log4 14\dfrac{1}{4} = -1.

Hence, logarithmic form is log4 14\dfrac{1}{4} = -1.

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