Предмет: Алгебра, автор: Маша11190

Помогите с алгеброй. 10 класс!

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Ответы

Автор ответа: Artem112

$f(x)=-x^2-7x+8 \ f`(x)=-2x-7 \ f(a)=-a^2-7a+8 \ f`(a)=-2a-7 \ y=-a^2-7a+8-(2a+7)(x-a) ; B(0;9) \ 9=-a^2-7a+8-(2a+7)(0-a) \ 9=-a^2-7a+8+2a^2+7a \ a^2=1 \ a_1=1 \ a_2=-1 \ y_1=-1^2-7cdot1+8-(2cdot1+7)(x-1)=-9x+9 \ y_2=-(-1)^2-7cdot(-1)+8-(2cdot(-1)+7)(x-(-1))=9-5x$
Ответ: -9x+9; 9-5x

Автор ответа: Маша11190

странно...но,с ответами не сходится...

Автор ответа: Маша11190

жалею,что пять звезд поставила

Автор ответа: Artem112

ну и что же там в ответах стоит?

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