Answer:
[tex\large\boxed{\log2-\log4=\log\frac{1}{2}}[/tex]
Step-by-step explanation:
[tex]\text{Use}\ \log_ab-\log_ac=\log_a\dfrac{b}{c}\\\\==========================\\\\\log2-\log4=\log\dfrac{2}{4}=\log\dfrac{1}{2}[/tex]
