Question

Determine the vertex and the domain and range of the function 𝑓(𝑥) = 4𝑥 − 𝑋2

84

likes
421 views

Answer to a math question Determine the vertex and the domain and range of the function 𝑓(𝑥) = 4𝑥 − 𝑋2

Expert avatar
Sigrid
4.5
119 Answers
Primero, reescribimos la función en su forma estándar:
f(x) = -x^2 + 4x

Para encontrar el vértice de una parábola de la forma ax^2 + bx + c, usamos las fórmulas:

1. La coordenada x del vértice es x = -\frac{b}{2a}.

En nuestro caso:
a = -1, b = 4.

Entonces:
x = -\frac{4}{2(-1)} = 2

2. Para encontrar la coordenada y del vértice, sustituimos x en la función:
y = f(2) = -2^2 + 4(2) = -4 + 8 = 4

Entonces, el vértice es:
\left(2, 4\right)

El dominio de una función cuadrática ax^2 + bx + c siempre es:
(-\infty, \infty)

Para encontrar el recorrido, observamos el coeficiente principal a. Si a < 0, la parábola abre hacia abajo, con un máximo en el vértice.

Dado que a = -1 en nuestro caso, el recorrido es:
[4, \infty)

Respuesta:
El vértice de la función es \left(2,4\right).
El dominio es (-\infty, \infty).
El recorrido es [4, \infty).

Frequently asked questions (FAQs)
Question: What are the maximum and minimum values of the function f(x) = cot(x) in its characteristic period?
+
Question: Convert 135 centimeters to inches.
+
Math question: "If log(base 2)(x) = 4 and log(base 3)(y) = 2, find the value of log(base 6)(xy)."
+
New questions in Mathematics
If we have the sequence: 3, 6, 12, 24 Please determine the 14th term.
What is the amount of interest of 75,000 at 3.45% per year, at the end of 12 years and 6 months?
A book is between 400 and 450 pages. If we count them 2 at a time there is none left over, if we count them 5 at a time there is none left over and if we count them 7 at a time there are none left over, how many pages does the book have?
The Lenovo company manufactures laptop computers, it is known that for every 60 laptops produced, 54 go on the market with the highest quality standards. If a sample of 15 laptops is taken, calculate the probability that: Exactly 2 are not of high quality
[(36,000,000)(0.000003)^2]divided(0.00000006)
To make brine, José buys 1 kg of salt and pays 12 pesos. If he buys 4 kg, they charge him 48 pesos, but for 100 pesos they sell him 9 kg. What is the constant of proportionality?
How many different ways can a psychology student select 5 subjects from a pool of 20 subjects and assign each one to a different experiment?
-4y-6(2z-4y)-6
Credit title that represents a payment order. This model, which emerged in Brazil, can only be issued in two specific situations: in the purchase and sale of commercial products or in the provision of services. Select the correct alternative: Question 6Answer The. Present value B. Promissory note w. Present value d. Duplicate It is. Bill of exchange
Desarrolla (2x)(3y + 2x)5
Find the derivatives for y=X+1/X-1
Convert 5/9 to a decimal
3/9*4/8=
P(Z<z)=0.1003
At the dance there are 150 boys the rest are girls. If 65% are girls what is the total amount in the room
Next%C3%B3n%2C+we+are+given+a+series+of+Tri%C3%A1angles+Right%C3%A1angles+%3Cbr%2F%3Ey+in+each+one+of+them+ are+known+2%28two%29+measurements+of+sides.+%3Cbr%2F%3Elet's+determine+all+trigonom%C3%A9tric+ratios.
Calculate the difference between 407 and 27
2X+2=8
Calculate the change in internal energy of a gas that receives 16000 J of heat at constant pressure (1.3 atm) expanding from 0.100 m3 to 0.200 m3. Question 1Answer to. 7050J b. 2125J c. None of the above d. 2828J and. 10295 J
The mean of 4 numbers is 5 and the mean of 3 different numbers is 12. What is the mean of the 7 numbers together? Produce an algebraic solution. Guess and check is acceptable.