Posted by Roger on .
solve the following exponential equation
e^x4=e^x
please show work

math 
Steve,
if you let u = e^x,
u4 = 1/u
u^2  4u = 1
u^2  4u + 1 = 0
now just use the quadratic formula and if you get values for u, wind up with
x = ln(u) if defined