- #1
yaho8888
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[itex] \int \frac{x^2}{\sqrt{9-x^2}} [/itex]
find the integral using trig sub
[tex] x= 3 \sin {\phi} [/tex]
replace 3sin[tex]\phi[/tex] into x and solve. I got to
[tex]
\int \frac{9-9 \cos{\phi}}{3 \cos{\phi}}
[/tex]
then what should I do?
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