r uchun yechish
r\geq \frac{8}{7}
Baham ko'rish
Klipbordga nusxa olish
r-3\geq -\frac{13}{7}
Ikki tarafini 7 ga bo‘ling. 7 musbat bo‘lgani uchun, tengsizlik yo‘nalishi o‘zgarmaydi.
r\geq -\frac{13}{7}+3
3 ni ikki tarafga qo’shing.
r\geq -\frac{13}{7}+\frac{21}{7}
3 ni \frac{21}{7} kasrga o‘giring.
r\geq \frac{-13+21}{7}
-\frac{13}{7} va \frac{21}{7} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.
r\geq \frac{8}{7}
8 olish uchun -13 va 21'ni qo'shing.
Misollar
Ikkilik tenglama
{ x } ^ { 2 } - 4 x - 5 = 0
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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
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Differensatsiya
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Oʻngga
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Chegaralar
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