$(1\mathrm{.}10)$

${\displaystyle \underset{\phantom{}}{\overset{\phantom{}}{}}}\frac{x1}{\sqrt[\phantom{2}]{3-2x-x^2}}dx$

$(1\mathrm{.}11)$

${\displaystyle \underset{\phantom{}}{\overset{\phantom{}}{}}}\frac{9}{(1-3x{)}^4}dx$

$(1\mathrm{.}12)$

${\displaystyle \underset{\phantom{}}{\overset{\phantom{}}{}}}se{c}^2(4)d$

$(1\mathrm{.}13)$

${\displaystyle \underset{\phantom{}}{\overset{\phantom{}}{}}}3e^{-4x}dx$