Evaluate
100
Factor
2^{2}\times 5^{2}
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3+3+4+5+6+7+8+9+10+9+8+7+6+5+4+3+2+1
Add 1 and 2 to get 3.
6+4+5+6+7+8+9+10+9+8+7+6+5+4+3+2+1
Add 3 and 3 to get 6.
10+5+6+7+8+9+10+9+8+7+6+5+4+3+2+1
Add 6 and 4 to get 10.
15+6+7+8+9+10+9+8+7+6+5+4+3+2+1
Add 10 and 5 to get 15.
21+7+8+9+10+9+8+7+6+5+4+3+2+1
Add 15 and 6 to get 21.
28+8+9+10+9+8+7+6+5+4+3+2+1
Add 21 and 7 to get 28.
36+9+10+9+8+7+6+5+4+3+2+1
Add 28 and 8 to get 36.
45+10+9+8+7+6+5+4+3+2+1
Add 36 and 9 to get 45.
55+9+8+7+6+5+4+3+2+1
Add 45 and 10 to get 55.
64+8+7+6+5+4+3+2+1
Add 55 and 9 to get 64.
72+7+6+5+4+3+2+1
Add 64 and 8 to get 72.
79+6+5+4+3+2+1
Add 72 and 7 to get 79.
85+5+4+3+2+1
Add 79 and 6 to get 85.
90+4+3+2+1
Add 85 and 5 to get 90.
94+3+2+1
Add 90 and 4 to get 94.
97+2+1
Add 94 and 3 to get 97.
99+1
Add 97 and 2 to get 99.
100
Add 99 and 1 to get 100.
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}