- #1
karush
Gold Member
MHB
- 3,269
- 5
Evaluate $\int\sqrt{9+4{x}^{2}}\ dx$
$$
\displaystyle
x= \frac{3}{2}\tan(u)
\ \ dx= \sec^2(u)
$$
$$
\displaystyle
x= \frac{3}{2}\tan(u)
\ \ dx= \sec^2(u)
$$
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