Question

方程(5^x)*10^3x=8^x的解

Answer 1

(5^x)*10^3x=8^x

5^x*2^3x*5^3x=8^x

5^4x*8^x=8^x

5^4x=1

x=0

2^(x+1)=3^(2x+1)

2^x*2=3^2x*3

(2/9)^x=3/2

x=log(2/9)(3/2)

x=(log3-log2)/(log2-log9)