Datrys ar gyfer x
x\in \begin{bmatrix}-\sqrt{2},\sqrt{2}\end{bmatrix}
Graff
Rhannu
Copïo i clipfwrdd
x^{2}+2x+1-2\left(x+1\right)-1\leq 0
Defnyddio'r theorem binomaidd \left(a+b\right)^{2}=a^{2}+2ab+b^{2} i ehangu'r \left(x+1\right)^{2}.
x^{2}+2x+1-2x-2-1\leq 0
Defnyddio’r briodwedd ddosbarthu i luosi -2 â x+1.
x^{2}+1-2-1\leq 0
Cyfuno 2x a -2x i gael 0.
x^{2}-1-1\leq 0
Tynnu 2 o 1 i gael -1.
x^{2}-2\leq 0
Tynnu 1 o -1 i gael -2.
x^{2}\leq 2
Ychwanegu 2 at y ddwy ochr.
x^{2}\leq \left(\sqrt{2}\right)^{2}
Cyfrifo ail isradd 2 a chael \sqrt{2}. Ailysgrifennwch 2 fel \left(\sqrt{2}\right)^{2}.
|x|\leq \sqrt{2}
Mae anghydraddoldeb ar gyfer |x|\leq \sqrt{2}.
x\in \begin{bmatrix}-\sqrt{2},\sqrt{2}\end{bmatrix}
Ailysgrifennwch |x|\leq \sqrt{2} fel x\in \left[-\sqrt{2},\sqrt{2}\right].
Enghreifftiau
Hafaliad cwadratig
{ x } ^ { 2 } - 4 x - 5 = 0
Trigonometreg
4 \sin \theta \cos \theta = 2 \sin \theta
Hafaliad llinol
y = 3x + 4
Rhifyddeg
699 * 533
Matrics
\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]
Hafaliad ar y pryd
\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
Gwahaniaethu
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integreiddiad
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Terfynau
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}