Answer: 1.252
Explanation:
We are given this equation and we need to find the value of [tex]x[/tex]:
[tex]1+2e^x+1=9[/tex] (1)
Firstly, we have to clear [tex]x[/tex]:
[tex]2e^x=9-1-1[/tex]
[tex]2e^x=7[/tex]
[tex]e^x=\frac{7}{2}[/tex] (2)
Applying Natural Logarithm on both sides of the equation (2):
[tex]ln(e^x)=ln(\frac{7}{2})[/tex] (3)
[tex]xln(e)=ln(\frac{7}{2})[/tex] (4)
According to the Natural Logarithm rules [tex]xln(e)=x[/tex], so (4) can be written as:
[tex]x=ln(\frac{7}{2})[/tex] (5)
Finally:
[tex]x=1.252[/tex]
