Evaluate
25.5
Factor
\frac{3 \cdot 17}{2} = 25\frac{1}{2} = 25.5
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5+4+1.5+2+2+2+2+1+6
Add 2 and 3 to get 5.
9+1.5+2+2+2+2+1+6
Add 5 and 4 to get 9.
10.5+2+2+2+2+1+6
Add 9 and 1.5 to get 10.5.
12.5+2+2+2+1+6
Add 10.5 and 2 to get 12.5.
14.5+2+2+1+6
Add 12.5 and 2 to get 14.5.
16.5+2+1+6
Add 14.5 and 2 to get 16.5.
18.5+1+6
Add 16.5 and 2 to get 18.5.
19.5+6
Add 18.5 and 1 to get 19.5.
25.5
Add 19.5 and 6 to get 25.5.
Examples
Quadratic equation
{ 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}