Whakaoti mō y
y\leq 3
Graph
Tohaina
Kua tāruatia ki te papatopenga
2y+8\geq 7\left(y-1\right)
Whakamahia te āhuatanga tohatoha hei whakarea te 2 ki te y+4.
2y+8\geq 7y-7
Whakamahia te āhuatanga tohatoha hei whakarea te 7 ki te y-1.
2y+8-7y\geq -7
Tangohia te 7y mai i ngā taha e rua.
-5y+8\geq -7
Pahekotia te 2y me -7y, ka -5y.
-5y\geq -7-8
Tangohia te 8 mai i ngā taha e rua.
-5y\geq -15
Tangohia te 8 i te -7, ka -15.
y\leq \frac{-15}{-5}
Whakawehea ngā taha e rua ki te -5. Nō te mea he <0 te -5, ka hurihia te ahunga koreōrite.
y\leq 3
Whakawehea te -15 ki te -5, kia riro ko 3.
Ngā Tauira
whārite tapawhā
{ x } ^ { 2 } - 4 x - 5 = 0
Āhuahanga
4 \sin \theta \cos \theta = 2 \sin \theta
whārite paerangi
y = 3x + 4
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}