a) Find, as natural logarithms, the solutions of the equation
e^2x - 8e^x + 15 = 0 (这题会做 下面不会）
b) use proof by contradiction to prove that log2(小2）3（真数） is irrational.
e^2x - 8e^x + 15 = 0 (这题会做 下面不会）
b) use proof by contradiction to prove that log2(小2）3（真数） is irrational.
