Should have gone straight to using the log of base 2/5 to minimize the number of steps in solving the exponential equation. Applying the appropriate log base to the exponential equation allows using whatever is in the exponent on one side of the equation to be the only thing on that side of the equation.
Only that log(2/5) can be written in the denominator as log2-log5, but that’s as much as it can be simplified. The expression in the numerator is inside the log function in its simplest form so it can’t be changed.
Có nhiều cách giải bài toán này, cảm ơn bạn chia sẻ kinh nghiệm cho các bạn trẻ, tôi đã 60 tuổi nhưng vẫn nhớ kiến thức này từ Việt Nam 🤝
I am grateful, sir. 🙏
Should have gone straight to using the log of base 2/5 to minimize the number of steps in solving the exponential equation. Applying the appropriate log base to the exponential equation allows using whatever is in the exponent on one side of the equation to be the only thing on that side of the equation.
You are absolutely right 💯
Can’t the answer be simplified?
Only that log(2/5) can be written in the denominator as log2-log5, but that’s as much as it can be simplified. The expression in the numerator is inside the log function in its simplest form so it can’t be changed.