Evaluate
-\frac{80}{6561}\approx -0.012193263
Factor
-\frac{80}{6561} = -0.012193263222069806
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\frac{1}{6561}-9^{-2}
Calculate 9 to the power of -4 and get \frac{1}{6561}.
\frac{1}{6561}-\frac{1}{81}
Calculate 9 to the power of -2 and get \frac{1}{81}.
-\frac{80}{6561}
Subtract \frac{1}{81} from \frac{1}{6561} to get -\frac{80}{6561}.
Examples
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y = 3x + 4
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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.
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\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
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Limits
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