How does the Double integration Calculator work? Select the option first, definite or indefinite. Enter the two-variable function into the input box. Use the keypad icon to enter mathematical

Integral Steps: First, we take inner integral: ∫(x2 + 3xy2 + xy)dx. Now, the double integral solver Integrate term-by-term: The integral of xnisxn + 1 / n + 1 when n≠−1: ∫x2dx = x3 / 3. ∫3xy2dx =