Question

log2 3 = x ; log2 5=y express log45 in terms of x and y​

Answer 1

Answer: Below

Step-by-step explanation:Using log we convert multiplication and division into addition and subtraction respectively.

log ab = log a + log b = x and then we take antilog to get the answer of ab.

Take the following simple example

For example 5 * 10 = log 5 + log 10

==> = 0.6989 + 1

==> = 1.6989 ==> Taking antilogs ==> 50

log 45 = log (9 * 5) = log (3^2 * 5)

=> 2 log 3 + log 5 = 2a + b.