Question

\[ \int \limits_{1}^{4} x^2dx\]Practice problem; please let me first do it. I'd show my solution below.

Answer 1

\[\int x^2dx \implies {x^3 \over 3} \]\[\implies {{4^3 \over 3} - {1^3 \over 3}}\implies {63 \over 3} \implies 21 \]

Answer 2

Right?

Answer 3

right

Answer 4

:)

Answer 5

Thank you!