Enrhifo
\frac{n-r+1}{r\left(n+1\right)}
Ffactor
\frac{n-r+1}{r\left(n+1\right)}
Rhannu
Copïo i clipfwrdd
\frac{n+1}{r\left(n+1\right)}-\frac{r}{r\left(n+1\right)}
I ychwanegu neu dynnu mynegiannau, rhaid i chi eu ehangu i wneud eu enwaduron yr un fath. Lluosrif lleiaf cyffredin r a n+1 yw r\left(n+1\right). Lluoswch \frac{1}{r} â \frac{n+1}{n+1}. Lluoswch \frac{1}{n+1} â \frac{r}{r}.
\frac{n+1-r}{r\left(n+1\right)}
Gan fod gan \frac{n+1}{r\left(n+1\right)} a \frac{r}{r\left(n+1\right)} yr un dynodydd, tynnwch nhw drwy dynnu eu rhifiaduron.
\frac{n+1-r}{nr+r}
Ehangu r\left(n+1\right).
Enghreifftiau
Hafaliad cwadratig
{ x } ^ { 2 } - 4 x - 5 = 0
Trigonometreg
4 \sin \theta \cos \theta = 2 \sin \theta
Hafaliad llinol
y = 3x + 4
Rhifyddeg
699 * 533
Matrics
\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}