a uchun yechish
\left\{\begin{matrix}a=\frac{r}{\cos(n\theta )}\text{, }&\theta =0\text{ or }\nexists n_{1}\in \mathrm{Z}\text{ : }n=\frac{\pi n_{1}}{\theta }+\frac{\pi }{2\theta }\\a\in \mathrm{R}\text{, }&r=0\text{ and }\exists n_{1}\in \mathrm{Z}\text{ : }n=\frac{\pi n_{1}}{\theta }+\frac{\pi }{2\theta }\text{ and }\theta \neq 0\end{matrix}\right,
Grafik
Viktorina
Trigonometry
r = a \cos n \theta
Baham ko'rish
Klipbordga nusxa olish
a\cos(n\theta )=r
Tomonlarni almashtirib, barcha oʻzgaruvchi shartlar chap tomonga oʻtkazing.
\cos(n\theta )a=r
Tenglama standart shaklda.
\frac{\cos(n\theta )a}{\cos(n\theta )}=\frac{r}{\cos(n\theta )}
Ikki tarafini \cos(n\theta ) ga bo‘ling.
a=\frac{r}{\cos(n\theta )}
\cos(n\theta ) ga bo'lish \cos(n\theta ) ga ko'paytirishni bekor qiladi.
Misollar
Ikkilik tenglama
{ x } ^ { 2 } - 4 x - 5 = 0
Trigonometriya
4 \sin \theta \cos \theta = 2 \sin \theta
Chiziqli tenglama
y = 3x + 4
Arifmetik
699 * 533
Matritsa
\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]
Simli tenglama
\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
Differensatsiya
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Oʻngga
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Chegaralar
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}