Baholash
28+21i
Ashyoviy qism
28
Baham ko'rish
Klipbordga nusxa olish
7i\times 3+7\left(-4\right)i^{2}
7i ni 3-4i marotabaga ko'paytirish.
7i\times 3+7\left(-4\right)\left(-1\right)
Ta’rifi bo‘yicha, i^{2} – bu -1.
28+21i
Ko‘paytirishlarni bajaring. Shartlarni qayta saralash.
Re(7i\times 3+7\left(-4\right)i^{2})
7i ni 3-4i marotabaga ko'paytirish.
Re(7i\times 3+7\left(-4\right)\left(-1\right))
Ta’rifi bo‘yicha, i^{2} – bu -1.
Re(28+21i)
7i\times 3+7\left(-4\right)\left(-1\right) ichidagi ko‘paytirishlarni bajaring. Shartlarni qayta saralash.
28
28+21i ning real qismi – 28.
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}