Question

explain log 225 by 400

Answer 1

$log( \frac{225}{400} ) = log({ \frac{15}{20})}^{2} ) = 2 log( \frac{15}{20} )$
=> 2log(3/4) =2log(3)- 2log(4) => 2(0.4770)-2(2log2)
=> 0.954- 4log(2)=> 0.954-4(0.3010)=> 0.954-1.204
=> -0.250 .Hope it helps you.... I did what you want to ask for i think .