Logarithm Example (Continue)

Example 1

What is x in log3(x)= 5 

log3(x)= 5
₃(5)= x
x = 243

~ 3 x 3 x 3 x 3 x 3

So the answer is x = 243

Example 2

Convert the following indices into logarithm form :-

1. 10² = 100
2. 15² = 225
3. 2² = 4
4. 5² = 25

Answer 1

Answer 2

log10(100)=2

10 x 10 = 100

log15(225) = 2

15 x 15 = 225

Answer 3

log2(4) = 2

2 x 2 = 4

Answer 4

log5(25) = 2

5 x 5 = 25