**Explain in words why each of the following integrals is improper.**

**(a) integral from 2^(infinity) t^7 e^(-t^2) dt.**

**Answer:**

integrals at with bounds at infinity are improper, and since 2∞ is infinite, the integral is improper.

**Explain in words why each of the following integrals is improper.**

**(a) integral from 2^(infinity) t^7 e^(-t^2) dt.**

**Answer:**

integrals at with bounds at infinity are improper, and since 2∞ is infinite, the integral is improper.