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Formula
Calculate the integral
$\int{ \sqrt{ x } }d{ x }$
$2 \times \dfrac { 1 } { 3 } \sqrt{ x ^ { 3 } }$
Calculate the integral
$\displaystyle\int { \sqrt{ \color{#FF6800}{ x } } } d { \color{#FF6800}{ x } }$
 Substitute with $u = \sqrt{ x }$ and calculate the integral 
$\left [ \color{#FF6800}{ 2 } \displaystyle\int { \color{#FF6800}{ u } ^ { \color{#FF6800}{ 2 } } } d { \color{#FF6800}{ u } } \right ] _ { \color{#FF6800}{ u } = \sqrt{ \color{#FF6800}{ x } } }$
$\left [ 2 \displaystyle\int { \color{#FF6800}{ u } ^ { \color{#FF6800}{ 2 } } } d { \color{#FF6800}{ u } } \right ] _ { u = \sqrt{ x } }$
 Calculate the integral using the formula of $\int{x^{n}}dx = \frac{x^{n+1}}{n+1}$
$\left [ 2 \times \color{#FF6800}{ \frac { 1 } { 2 + 1 } } \color{#FF6800}{ u } ^ { \color{#FF6800}{ 2 } \color{#FF6800}{ + } \color{#FF6800}{ 1 } } \right ] _ { u = \sqrt{ x } }$
$\left [ 2 \times \frac { 1 } { \color{#FF6800}{ 2 } \color{#FF6800}{ + } \color{#FF6800}{ 1 } } u ^ { 2 + 1 } \right ] _ { u = \sqrt{ x } }$
 Add $2$ and $1$
$\left [ 2 \times \frac { 1 } { \color{#FF6800}{ 3 } } u ^ { 2 + 1 } \right ] _ { u = \sqrt{ x } }$
$\left [ 2 \times \frac { 1 } { 3 } u ^ { \color{#FF6800}{ 2 } \color{#FF6800}{ + } \color{#FF6800}{ 1 } } \right ] _ { u = \sqrt{ x } }$
 Add $2$ and $1$
$\left [ 2 \times \frac { 1 } { 3 } u ^ { \color{#FF6800}{ 3 } } \right ] _ { u = \sqrt{ x } }$
$\left [ \color{#FF6800}{ 2 } \color{#FF6800}{ \times } \color{#FF6800}{ \frac { 1 } { 3 } } \color{#FF6800}{ u } ^ { \color{#FF6800}{ 3 } } \right ] _ { \color{#FF6800}{ u } = \sqrt{ \color{#FF6800}{ x } } }$
 Return the substituted value 
$\color{#FF6800}{ 2 } \color{#FF6800}{ \times } \color{#FF6800}{ \dfrac { 1 } { 3 } } \left ( \sqrt{ \color{#FF6800}{ x } } \right ) ^ { \color{#FF6800}{ 3 } }$
$\color{#FF6800}{ 2 } \color{#FF6800}{ \times } \color{#FF6800}{ \dfrac { 1 } { 3 } } \left ( \sqrt{ \color{#FF6800}{ x } } \right ) ^ { \color{#FF6800}{ 3 } }$
 Simplify the expression 
$\color{#FF6800}{ 2 } \color{#FF6800}{ \times } \color{#FF6800}{ \dfrac { 1 } { 3 } } \sqrt{ \color{#FF6800}{ x } ^ { \color{#FF6800}{ 3 } } }$
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