\(3.4^{x-1}=48\)
\(4^{x-1}=48:3=16\)
\(\Leftrightarrow\orbr{\begin{cases}4^{x-1}=4\\4^{x-1}=-4\end{cases}\Leftrightarrow\orbr{\begin{cases}x-1=1\\\Phi\end{cases}}\Leftrightarrow x=1}\)
52x+1=125
3.4x =48
|x+1/1.2|+|x+1/2.3+|x+1/3.4|+....+|x+1/99.100|=100x. Tìm x
Tìm x
1/4.4^x+3.4^(2-x)=832
Tìm x : |x+1/1.2|+|x+1/2.3|+|x+1/3.4|+...+|x+2016.2017|=2017xGiúp mình với ! Cảm ơn
tìm x biết (1/1.2+1/3.4+1/5.6+...+1/101.102).x=1/52.102+1/53.101+...+1/102.52+1/77.154
Tìm x
1/4.4^x+3.4^(2-x)=832
\(\frac{x}{1.2}+\frac{x}{2.3}+\frac{x}{3.4}+...+\frac{x}{1999.2000}\) =1. Tìm x
tìm x biết :(1.2+2.3+3.4+...+2017.2018)/(2018.2019.x)=1/(1+2)+1/(1+2+3)+....+1/(1+2+....+2018)
Tìm x
4x+3-3.4x+1=13.411
