evaluate.\n int_{-3}^{4} \frac{dt}{4 + t} \n int_{-3}^{4} \frac{dt}{4 + t} = square (type an exact answer.)

evaluate.\n int_{-3}^{4} \frac{dt}{4 + t} \n int_{-3}^{4} \frac{dt}{4 + t} = square (type an exact answer.)
Answer
Explanation:
Step1: Use substitution
Let $u = 4 + t$, then $du=dt$. When $t=-3$, $u = 4+( - 3)=1$; when $t = 4$, $u=4 + 4=8$.
Step2: Rewrite the integral
The integral $\int_{-3}^{4}\frac{dt}{4 + t}$ becomes $\int_{1}^{8}\frac{du}{u}$.
Step3: Integrate
We know that $\int\frac{du}{u}=\ln|u|+C$. So, $\int_{1}^{8}\frac{du}{u}=\left[\ln(u)\right]_{1}^{8}$.
Step4: Evaluate the definite - integral
$\left[\ln(u)\right]_{1}^{8}=\ln(8)-\ln(1)$. Since $\ln(1) = 0$, the result is $\ln(8)$.
Answer:
$\ln(8)$