Предмет: Алгебра, автор: DannBraun

Для функции f(x) = x^3+3x-1, найдите для фукции f(-2) и f(x+1)

Ответы

Автор ответа: nKrynka

Решение
f(x) = x³ + 3 x- 1
f(-2) = (-2)³ + 3*(-2) - 1 = - 8 - 6 - 1 = - 15
f(x + 1) = (x + 1)³ + 3*(x + 1) - 1 =
= x³ + 3x² + 3x + 1 + 3x + 3 - 1 = x³ + 3x² + 6x + 3

Автор ответа: DannBraun

Спасибо)

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Русский язык, автор: Аноним

пАмАгИтИ пОжАлУйСтА
оЧеНь НуЖнА Пжстаааааа

5 лет назад

Предмет: Английский язык, автор: kkkimnek

Reading Task 1.

Read the text and decide if these sentences are True or False. How many calories can you burn in one hour? Well, it all depends on the activity. You use calories all the time, even when you are resting. reading, sleeping, sitting and sunbathing all use about 60 calories an hour. Very light activities use 75 calories. Examples are eating, writing, knitting, shaving, driving and washing up. Light activities use about 100 calories an hour include playing the piano, getting dressed and having a shower. Under moderate activities that use between 100 and 200 calories an hour, we can put walking, doing housework, shopping andskating. Energetic activities use 20-300 calories. These include horse riding, cycling, swimming, skipping and dancing. Finally, there are strenuous activities, useup to 600 calories an hour. These activities include climbing stairs, digging the garden and playing football.

1. The amount of calories we use an hour depends on the activity we do. (true/false)

2. Cycling and dancing use the same amount of calories. (true/false)

3. Professional swimmers need to eat less than normal people. (true/false)

4. Rice, bread and potatoes are good sources of carbohydrates. (true/false)

5. I haven't decided yet, but I.......... go the gym. (might/have to)

6. You ............. eat in here. (don't have to/mustn't)

7. if were you, l ................ to my parents. (wouldn't lie/won't lie/don't lie)

8. Never go to bed ............... a full stomach. (at/on)

9. if you want to be ............... good shape, do a physical activites. (at/in)

5 лет назад

Предмет: Обществознание, автор: Аноним

Пж пж пж помогите даю 15балла!!!

5 лет назад

Предмет: Литература, автор: НоЛеЧкА

прочитай как описывает музыку э грига писатель к г паустовский
Помогите!!!!!

9 лет назад

Предмет: Литература, автор: zhmarinchewa

Сочинение по рассказу пришвина "Кладовая Солнца"

9 лет назад