Предмет: Математика, автор: nastyashinkevich0

Высшая математика.
Помогите решить пожалуйста

Приложения:

nastyashinkevich0: там все задания,не только в кружке
dnepr1: Нельзя выкладывать задания КОНТРОЛЬНЫХ работ. Надо давать 2-3 вопроса, а НЕ целые страницы!!!

Ответы

Автор ответа: dnepr1
1

4) Для составления уравнения плоскости используем формулу:

x - xA         y - yA        z - zA

xB - xA     yB - yA     zB - zA

xC - xA     yC - yA      zC - zA   = 0

Подставим данные и упростим выражение:

x - 2  y - 3         z - 4

1 - 2  0 - 3 0 - 4

0 - 2 -1 - 3 0 - 4   = 0

x - 2          y - 3 z - 4

-1          -3         -4

-2          -4         -4   = 0

(x - 2)(-3·(-4)-(-4)·(-4)) - (y - 3)((-1)·(-4)-(-4)·(-2) + (z - 4)((-1)·(-4)-(-3)·(-2) = 0

(-4)(x - 2) + 4(y - 3) + (-2)(z - 4) = 0

- 4x + 4y - 2z + 4 = 0

2x - 2y + z - 2 = 0

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