Question

Как найти n от y=x^2-x-2?m2=-1/2*2=-1n2=2(смотрел по "построение графиков функций онлайн", но никак не выходит в формулу)

Answer 1

1способ-выделение полного квадрата
y=(x²-2*x*1/2+1/4)-1/4-2=(x-1/2)²-2 1/4
m=1/2 n=-9/4
2 cпособ
m=-b/2a=1/(2*1)=1/2
подставим в уравнение
y=1/4-1/2-2=1/4-2/4-2=-1/4-2=-2 1/4
n=-9/4

Answer 2

Finding the Value of n from y = x^2 - x - 2

To find the value of n from the equation y = x^2 - x - 2, we can use the given equation and solve for n. The equation provided seems to be in the form of a quadratic equation, and we can manipulate it to solve for n.

The equation provided is: y = x^2 - x - 2

To find the value of n, we can use the equation m2 = -1/2 and n2 = 2. Let's solve for n using these values.

First, let's find the value of x when m2 = -1/2: - m2 = -1/2 - This means that x = -1/2

Now, let's find the value of y when x = -1/2: - y = (-1/2)^2 - (-1/2) - 2 - y = 1/4 + 1/2 - 2 - y = -7/4

Now that we have the value of y, we can use the equation n2 = 2 to solve for n: - n2 = 2 - This means that n = ±√2

Therefore, the value of n can be either √2 or -√2.

So, the value of n from the equation y = x^2 - x - 2 is ±√2.

I hope this helps! If you have further questions or need additional assistance, feel free to ask.