Evaluate Indefinite and Definite Integrals (9 Problems)
1. Evaluate d/dx (t^3)/(1 + t^2) dt 2. Evaluate d/dx et^2 dt 3. Evaluate the indefinite integral ((t^2)sin(t) + 2sin(t))/(2 + y^2) + e^t dt 4. Evaluate the definite integral sqrt(t)(1 + t) dt 5. Evaluate the indefinite integral (2 - sqrt(x))^r dx 6. Evaluate the indefinite integral (1/x + 1/(x^4) + 1/(x^9) dx 7. Evaluate