Whakaoti mō a
a\geq -\frac{1}{8}
Tohaina
Kua tāruatia ki te papatopenga
9-4\left(a-1\right)\left(-2\right)\geq 0
Tātaihia te 3 mā te pū o 2, kia riro ko 9.
9-\left(-8\left(a-1\right)\right)\geq 0
Whakareatia te 4 ki te -2, ka -8.
9+8\left(a-1\right)\geq 0
Ko te tauaro o -8\left(a-1\right) ko 8\left(a-1\right).
9+8a-8\geq 0
Whakamahia te āhuatanga tohatoha hei whakarea te 8 ki te a-1.
1+8a\geq 0
Tangohia te 8 i te 9, ka 1.
8a\geq -1
Tangohia te 1 mai i ngā taha e rua. Ko te tau i tango i te kore ka hua ko tōna korenga.
a\geq -\frac{1}{8}
Whakawehea ngā taha e rua ki te 8. I te mea he tōrunga te 8, kāore e huri te ahunga koreōrite.
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}