Вопрос школьника по предмету Математика
Решить систему графически
x²+y²=25
xy=12
Ответ учителя по предмету Математика
{x²+y²=25 окружность с центром (0;0) и радиусом 5
{xy=12⇒y=12/x гипербола в 1 и 3 ч
х -12 -6 -4 -3 -2 -1 1 2 3 4 6 12
у -1 -2 -3 -4 -6 -12 12 6 4 3 2 1
Ответ(-4;-3);(-3;-4);(3;4);(4;3)
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