\left\{ \begin{array} { l } { 2 x + y - z = 2 } \\ { x + y + z = 5 } \\ { x - y = - 1 } \end{array} \right.
Whakaoti mō x, y, z
x=1
y=2
z=2
Tohaina
Kua tāruatia ki te papatopenga
y=-2x+z+2
Me whakaoti te 2x+y-z=2 mō y.
x-2x+z+2+z=5 x-\left(-2x+z+2\right)=-1
Whakakapia te -2x+z+2 mō te y i te whārite tuarua me te tuatoru.
x=2z-3 z=3x-1
Me whakaoti ēnei whārite mō x me z takitahi.
z=3\left(2z-3\right)-1
Whakakapia te 2z-3 mō te x i te whārite z=3x-1.
z=2
Me whakaoti te z=3\left(2z-3\right)-1 mō z.
x=2\times 2-3
Whakakapia te 2 mō te z i te whārite x=2z-3.
x=1
Tātaitia te x i te x=2\times 2-3.
y=-2+2+2
Whakakapia te 1 mō te x me te 2 mō z i te whārite y=-2x+z+2.
y=2
Tātaitia te y i te y=-2+2+2.
x=1 y=2 z=2
Kua oti te pūnaha te whakatau.
Ngā Tauira
whārite tapawhā
{ x } ^ { 2 } - 4 x - 5 = 0
Āhuahanga
4 \sin \theta \cos \theta = 2 \sin \theta
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Arithmetic
699 * 533
Poukapa
\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]
whārite Simultaneous
\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
Whakarerekētanga
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Whakaurunga
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Ngā Tepe
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}