2 years ago

What are the focus and directrix of the parabola with the equation y = 1/2 x2

Mathematics

2 answers:

choli [55]2 years ago

6 0

Answer:

Step-by-step explanation:

Please write this as y = (1/2)x^2 for greater clarity. (1/2) is the coefficient of x^2 here.

The applicable form for the equation of this quadratic is 4py = x^2.

Your y = (1/2)x^2 becomes 2y = x^2. Therefore, 4p = 2, or p = (1/2).

Thus, the focus is (0, 1/2) (just above the vertex, (0, 0) ), and the equation of the directrix is y = -1/2.

VMariaS [17]2 years ago

4 0

Answer:

1/9

Step-by-step explanation:

You might be interested in

If f(x) and g(x)=x, determine the value(s) of x that satisfy the f(x)=g(x).

lions [1.4K]

Answer: All values make a true statement.

Step-by-step explanation: Since f(x) and g(x)=x, f(x)=g(x) can also be written as x=x. That is a true statement so all values of x works.

Hope this helps!

3 0

2 years ago

Trigonometry Identities help please

sesenic [268]

theta is in the fourth quadrant where the cosine is positive.

the third side in the triangle = sqrt (4 - 2) = sqrt2

So sin theta = -sqrt2/2 = Second choice (negative because sine is negative in 4th quadrant)

tan theta = - sqrt2 / sqrt2 = -1

6 0

3 years ago

100-99+98-97+96-95+...+8-7+6-5+4-3+2-1

lina2011 [118]

$100-99+98-97+96-95+...+8-7+6-5+4-3+2-1\\\\=(100-99)+(98-97)+(96-95)+...+(4-3)+(2-1)\\\\=\underbrace{1+1+1+...+1}_{50}=\fbox{50}$

8 0

3 years ago

Read 2 more answers

In the document below it´s assigned a portion of the book, from there you need to choose a chapter, re-do the situation that the

Molodets [167]

What are you asking anyways hope you get a good grade

6 0

3 years ago

Read 2 more answers

Help now plz asphejdjdb

Cloud [144]

Answer:

l:4

w: 3

l:4

w:1

Step-by-step explanation:

Hope this helps

8 0

2 years ago