Evaluate
20.11
Factor
\frac{2011}{2 ^ {2} \cdot 5 ^ {2}} = 20\frac{11}{100} = 20.11
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|4.41+7\times 2.1+1|
Calculate 2.1 to the power of 2 and get 4.41.
|4.41+14.7+1|
Multiply 7 and 2.1 to get 14.7.
|19.11+1|
Add 4.41 and 14.7 to get 19.11.
|20.11|
Add 19.11 and 1 to get 20.11.
20.11
The absolute value of a real number a is a when a\geq 0, or -a when a<0. The absolute value of 20.11 is 20.11.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
Trigonometry
4 \sin \theta \cos \theta = 2 \sin \theta
Linear equation
y = 3x + 4
Arithmetic
699 * 533
Matrix
\left[ \begin{array} { l l } { 2 } & { 3 } \\ { 5 } & { 4 } \end{array} \right] \left[ \begin{array} { l l l } { 2 } & { 0 } & { 3 } \\ { -1 } & { 1 } & { 5 } \end{array} \right]
Simultaneous equation
\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
Differentiation
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Limits
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}