Questions: Determine whether the integral is convergent or divergent. If it is convergent, evaluate it. (If the quantity diverges, enter DIVERGES.)
[
int0^9 frac5sqrt[3]x-1 d x
]
Transcript text: 12. [-/1 Points]
DETAILS
MY NOTES
SCALCET9 7.8.041.
Determine whether the integral is convergent or divergent. If it is convergent, evaluate it. (If the quantity diverges, enter DIVERGES.)
\[
\int_{0}^{9} \frac{5}{\sqrt[3]{x-1}} d x
\]
$\square$
Solution
Solution Steps
Step 1: Analyze the Integral
We need to evaluate the integral
\[
\int_{0}^{9} \frac{5}{\sqrt[3]{x-1}} \, dx.
\]
The integrand \(\frac{5}{\sqrt[3]{x-1}}\) is undefined at \(x = 1\), so we split the integral into two parts:
\[
\int_{0}^{1} \frac{5}{\sqrt[3]{x-1}} \, dx \quad \text{and} \quad \int_{1}^{9} \frac{5}{\sqrt[3]{x-1}} \, dx.
\]
Step 2: Evaluate the Integral from 0 to 1
We evaluate the first part:
\[
\int_{0}^{1} \frac{5}{\sqrt[3]{x-1}} \, dx.
\]
The result of this integral is \(3.75 - 6.49519052838329i\), which indicates that it is not a real number, suggesting divergence.
Step 3: Evaluate the Integral from 1 to 9
Next, we evaluate the second part:
\[
\int_{1}^{9} \frac{5}{\sqrt[3]{x-1}} \, dx.
\]
The result of this integral is \(30\), which is a real number and indicates convergence.
Step 4: Determine Convergence of the Overall Integral
Since the first integral diverges (as it yields a complex number), the overall integral
\[
\int_{0}^{9} \frac{5}{\sqrt[3]{x-1}} \, dx
\]
is classified as divergent. Thus, we conclude that the integral diverges.