lnx=-3
the answer in the textbook says it becomes x=e^-3 which I agree with, but then it gives 0.05 as the answer to solving it, I just don't understand how they found 0.05. Can anyone explain how to get 0.05 from x=e^-3?

Respuesta :

Nayefx

Answer:

because It's rounded to the nearest hundred place

Step-by-step explanation:

Given equation:

  • [tex] \ln(x ) = - 3[/tex]

recall that,

[tex] \ln(a ) = b \iff {e}^{b} = a[/tex]

remember, In is natural logarithm which is actually nothing but common logarithm with the base euler's number (e) . anyway rewriting lnx=-3 yields:

[tex] \ln( x ) = - 3\\ \iff {e}^{ - 3} = \frac{1}{ {e}^{3} } [/tex]

1/e³ is approximately 0.0497870684..... , rounding it to the nearest hundred place would be 0.05 which is the same answer as your textbook .