Enrhifo
\frac{49}{4}=12.25
Ffactor
\frac{7 ^ {2}}{2 ^ {2}} = 12\frac{1}{4} = 12.25
Cwis
Arithmetic
5 problemau tebyg i:
| - 2 ^ { 2 } + ( - 2 ) ^ { 3 } - 2 ^ { - 1 } + ( - 2 ) ^ { - 2 } | =
Rhannu
Copïo i clipfwrdd
|-4+\left(-2\right)^{3}-2^{-1}+\left(-2\right)^{-2}|
Cyfrifo 2 i bŵer 2 a chael 4.
|-4-8-2^{-1}+\left(-2\right)^{-2}|
Cyfrifo -2 i bŵer 3 a chael -8.
|-12-2^{-1}+\left(-2\right)^{-2}|
Tynnu 8 o -4 i gael -12.
|-12-\frac{1}{2}+\left(-2\right)^{-2}|
Cyfrifo 2 i bŵer -1 a chael \frac{1}{2}.
|-\frac{25}{2}+\left(-2\right)^{-2}|
Tynnu \frac{1}{2} o -12 i gael -\frac{25}{2}.
|-\frac{25}{2}+\frac{1}{4}|
Cyfrifo -2 i bŵer -2 a chael \frac{1}{4}.
|-\frac{49}{4}|
Adio -\frac{25}{2} a \frac{1}{4} i gael -\frac{49}{4}.
\frac{49}{4}
Gwerth absoliwt rhif real a yw a pan a\geq 0, neu -a pan a<0. Gwerth absoliwt -\frac{49}{4} yw \frac{49}{4}.
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}