Whakaoti mō x
x\geq 50
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Tohaina
Kua tāruatia ki te papatopenga
400-x-7x\leq 0
Tangohia te 7x mai i ngā taha e rua.
400-8x\leq 0
Pahekotia te -x me -7x, ka -8x.
-8x\leq -400
Tangohia te 400 mai i ngā taha e rua. Ko te tau i tango i te kore ka hua ko tōna korenga.
x\geq \frac{-400}{-8}
Whakawehea ngā taha e rua ki te -8. I te mea he tōraro a -8, ka huri te ahunga koreōrite.
x\geq 50
Whakawehea te -400 ki te -8, kia riro ko 50.
Ngā Tauira
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whārite Simultaneous
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Whakarerekētanga
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\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Ngā Tepe
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