3 = 13 \sin ( \theta ) \cos ( \theta ) - \frac{ 169 }{ 512 } (9 \cdot 8 { \left( \cos ( \theta ) \right) }^{ 2 }
Datrys ar gyfer θ (complex solution)
\theta =\frac{2\pi n_{1}-i\ln(|\frac{\sqrt{2435}\left(-1872+1024i\right)+\left(-222885+121920i\right)}{231205}|)+\pi -\arctan(\frac{64}{117})}{2}\text{, }n_{1}\in \mathrm{Z}
\theta =\frac{2\pi n_{2}-i\ln(|\frac{\sqrt{2435}\left(1872-1024i\right)+\left(-222885+121920i\right)}{231205}|)+\pi -\arctan(\frac{64}{117})}{2}\text{, }n_{2}\in \mathrm{Z}
Graff
Rhannu
Copïo i clipfwrdd
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}