Evaluate
\frac{1}{42}\approx 0.023809524
Factor
\frac{1}{2 \cdot 3 \cdot 7} = 0.023809523809523808
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\frac{32}{81}\times \frac{3}{8}\times \frac{9}{56}
Divide \frac{32}{81} by \frac{8}{3} by multiplying \frac{32}{81} by the reciprocal of \frac{8}{3}.
\frac{32\times 3}{81\times 8}\times \frac{9}{56}
Multiply \frac{32}{81} times \frac{3}{8} by multiplying numerator times numerator and denominator times denominator.
\frac{96}{648}\times \frac{9}{56}
Do the multiplications in the fraction \frac{32\times 3}{81\times 8}.
\frac{4}{27}\times \frac{9}{56}
Reduce the fraction \frac{96}{648} to lowest terms by extracting and canceling out 24.
\frac{4\times 9}{27\times 56}
Multiply \frac{4}{27} times \frac{9}{56} by multiplying numerator times numerator and denominator times denominator.
\frac{36}{1512}
Do the multiplications in the fraction \frac{4\times 9}{27\times 56}.
\frac{1}{42}
Reduce the fraction \frac{36}{1512} to lowest terms by extracting and canceling out 36.
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{ x } ^ { 2 } - 4 x - 5 = 0
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4 \sin \theta \cos \theta = 2 \sin \theta
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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.
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}