\left\{ \begin{array} { c } { x + 3 y - 4 z + t = - 4 } \\ { 5 z - t = 117 } \\ { 2 y + 7 z + 3 t = 19 } \\ { 3 z + 4 t = 1 } \end{array} \right.
Selesaikan untuk x, y, z, t
x = \frac{4842}{23} = 210\frac{12}{23} \approx 210.52173913
y = -\frac{904}{23} = -39\frac{7}{23} \approx -39.304347826
z = \frac{469}{23} = 20\frac{9}{23} \approx 20.391304348
t = -\frac{346}{23} = -15\frac{1}{23} \approx -15.043478261
Kongsi
Disalin ke papan klip
Contoh
Persamaan kuadratik
{ x } ^ { 2 } - 4 x - 5 = 0
Trigonometri
4 \sin \theta \cos \theta = 2 \sin \theta
Persamaan linear
y = 3x + 4
Aritmetik
699 * 533
Matriks
\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]
Persamaan serentak
\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
Pembezaan
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Pengamiran
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Had
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}