Question

finding volume integration

Answer 1

help me find volume?

Answer 2

\[\Large
Shaded Area=\int_1^3 \frac 1 {x^2} dx
\]

Answer 3

Shaded Area=2/3
Did you get that?

Answer 4

yes i did but my volume is not coming right?

Answer 5

i am using pie \[\int\limits_{1}^{3} y^2\]

Answer 6

\[
V=\int_1^3 \frac{\pi }{x^4} \, dx=\frac{26 \pi }{81}
\]

Answer 7

how did u get 81

Answer 8

Do the integration and substitute

Answer 9

\[

\int \frac{\pi }{x^4} \, dx=-\frac{\pi }{3 x^3}
\]