Problemas
Find the solution of the exponential equation 15e^x-3=7 The exact solution, in terms of the natural logarithm is: x=square The approximate solution rounded to 4 decimal places is: x=square
Roztwór
Eduardo
professionell · Tutor durante 6 años
4
(296 Votos)
Respuesta
To solve the exponential equation
, follow these steps:1. **Isolate the exponential term:**
Add 3 to both sides:
2. **Solve for
:** Divide both sides by 15:
3. **Take the natural logarithm of both sides:**
Using the property \(\ln(e^x) = x\):
So, the exact solution in terms of the natural logarithm is:
4. **Find the approximate solution:** Use a calculator to find the numerical value of \(\ln\left(\frac{2}{3}\right)\):
So, the approximate solution rounded to 4 decimal places is:
Therefore, the exact solution is \(x = \ln\left(\frac{2}{3}\right)\) and the approximate solution is
.