Question

Log¼(2x-1)=-1 срочно

Answer 1

$log_{ frac{1}{4} }(2x-1)=-1; ; ,; ; ODZ:; ; 2x-1 textgreater 0; ,; ; x textgreater frac{1}{2}\\log_{ frac{1}{4} }(2x-1)=log_{ frac{1}{4} }( frac{1}{4} )^{-1}\\2x-1=( frac{1}{4} )^{-1}\\2x-1=4\\2x=5\\x=2,5; ; -; ; otvet$