GPT: \(5^{2x-1}=125\)
\(\Leftrightarrow2x-1=log_5125\)
\(\Leftrightarrow2x-1=3\)
\(\Leftrightarrow2x=4\)
\(\Leftrightarrow x=2\)
GPT: \(2^{2x-1}=32\)
\(\Leftrightarrow2x-1=log_232\)
\(\Leftrightarrow2x-1=5\)
\(\Leftrightarrow2x=6\)
\(\Leftrightarrow x=3\)
Đúng 2
Bình luận (0)
\(A=log_65\cdot log_76\cdot log_87\)
\(=\dfrac{1}{log_56\cdot log_67\cdot log_78}=\dfrac{1}{log_58}\)
Đúng 1
Bình luận (0)
