Rhan Real
\frac{5}{81} = 0.06172839506172839
Enrhifo
\frac{5}{81}-\frac{1}{81}i\approx 0.061728395-0.012345679i
Rhannu
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Re(\frac{5-i}{\left(2+1\right)^{4}})
I godi pŵer rhif i bŵer arall, lluoswch yr esbonyddion. Lluoswch 2 a 2 i gael 4.
Re(\frac{5-i}{3^{4}})
Adio 2 a 1 i gael 3.
Re(\frac{5-i}{81})
Cyfrifo 3 i bŵer 4 a chael 81.
Re(\frac{5}{81}-\frac{1}{81}i)
Rhannu 5-i â 81 i gael \frac{5}{81}-\frac{1}{81}i.
\frac{5}{81}
Rhan real \frac{5}{81}-\frac{1}{81}i yw \frac{5}{81}.
Enghreifftiau
Hafaliad cwadratig
{ 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
Rhifyddeg
699 * 533
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\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]
Hafaliad ar y pryd
\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
Gwahaniaethu
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integreiddiad
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Terfynau
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}