Question

use common logarithm natural logarithm to find each logarithm, how would I do this?

a. log (base 5) 65
b. log (base 0.8) 70
c. log (base 2 ) 0.1

Answer 1

log (base 5)(5*13)
log(base5)5+log(base 5)13
1+log(base5)13

Answer 2

I see.. , its simply getting the factors

Answer 3

yes and remember....log(base a)a is always 1

Answer 4

now u try b

Answer 5

try to get the factors of 70 first

Answer 6

is it necessary to get the factor of 70 using the base? like( 0.8) (x) = 70 ?

Answer 7

@madrockz