1. The problem is to understand whether definite integrals were used in previous calculations. 2. A definite integral is an integral with upper and lower limits, written as $$\int_a^b f(x)\,dx$$, which calculates the area under the curve $f(x)$ from $x=a$ to $x=b$. 3. Definite integrals differ from indefinite integrals, which do not have limits and represent a family of functions plus a constant. 4. If you provide a specific integral or problem, I can confirm if it was solved using definite integrals and show the steps. 5. Please share the integral or problem you want to check for definite integral usage.