Réitigh do x.
x\in (-\infty,-5)\cup [3,\infty)
Graf
Tráth na gCeist
Algebra
\frac { 3 - x } { x + 5 } \leq 0
Roinn
Cóipeáladh go dtí an ghearrthaisce
3-x\geq 0 x+5<0
For the quotient to be ≤0, one of the values 3-x and x+5 has to be ≥0, the other has to be ≤0, and x+5 cannot be zero. Consider the case when 3-x\geq 0 and x+5 is negative.
x<-5
Is é an réiteach a shásaíonn an dá éagothromóid ná x<-5.
3-x\leq 0 x+5>0
Consider the case when 3-x\leq 0 and x+5 is positive.
x\geq 3
Is é an réiteach a shásaíonn an dá éagothromóid ná x\geq 3.
x<-5\text{; }x\geq 3
Is é an réiteach deireanach ná suim na réiteach a fuarthas.
Samplaí
Cothromóid chearnach
{ x } ^ { 2 } - 4 x - 5 = 0
Triantánacht
4 \sin \theta \cos \theta = 2 \sin \theta
Cothromóid líneach
y = 3x + 4
Uimhríocht
699 * 533
Maitrís
\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]
Cothromóid chomhuaineach
\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
Difreáil
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Comhtháthú
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Teorainneacha
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}