Calculus
# Definite Integrals

What is the value of the definite integral $\int_{0}^{1}(9+3x^2)dx?$

Evaluate $\int_{-2}^{-1}\left( x^3+3x^2+7 \right)dx + \int_{-1}^{2}\left( y^3+3y^2+7 \right)dy.$

$f(x)=x^3-6x$ using the right endpoints of each subinterval, where $f(x)$ is defined over the interval $[0, 3]$ and the number of subintervals is $n=6.$

Find the Riemann sum for