Question

Integration with Cross sections

Answer 1

\[y=7-x\]
\[\int\limits_{-7}^{7}(x(7-x))^2dx\]

So this is what I'm doing, but its not right

Answer 2

y=7-x?
Where is this coming from?

Answer 3

\[y^2=49-x^2\]

Answer 4

whoops lol

Answer 5

No no no no no.
Don't you ever do that again.
Lest I should take your ego indefinitely.

Answer 6

lmao

Answer 7

\[2\int\limits_{0}^{7}x \sqrt{49-x^2}dx\]