mohon bantuannya The picture is a graph of quadratic function......
1. mohon bantuannya The picture is a graph of quadratic function......
Persamaan umum fungsi kuadrat :
f(x) = Ax² + Bx + C
Diketahui grafik fungsi f(x) melewati titik :
» (3 , 0)
=> f(3) = 0
=> A.(3)² + B.(3) + C = 0
=> 9A + 3B + C = 0 ( i )
» (–1 , 0)
=> f(–1) = 0
=> A.(–1)² + B.(–1) + C = 0
=> A - B + C = 0 ( ii )
» (0 , 3)
=> f(0) = 3
=> A.(0)² + B.(0) + C = 3
=> C = 3
Subtitusikan nilai C ke ( i ) :
9A + 3B + C = 0
9A + 3B + 3 = 0
9A + 3B = –3 ( iii )
Subtitusikan nilai C ke ( ii ) :
A - B + C = 0
A - B + 3 = 0
A - B = –3 ( iv )
Eliminasi ( iii ) dan ( iv ) :
( iii ) : 9A + 3B = –3
(iv) × 3 : 3A - 3B = –9
________________ +
12A = –12 => A = –1
Subtitusikan nilai A ke ( iv ) :
A - B = –3
–1 - B = –3 => B = 2
Substitusikan nilai A, B, dan C ke persamaan fungsi kuadrat :
f(x) = Ax² + Bx + C
f(x) = (–1)x² + (2)x + (3)
Jadi, persamaan fungsi kuadrat grafik tersebut adalah : f(x)=–x²+2x+3
2. kak..pliss jawab dong...important!plisss find the trigonometric function of the graph. jawab yaa :
Jawab:
4 tan x°
Penjelasan dengan langkah-langkah:
perhatikan bahwa di kuadran I (sudut 0° sampai 90°) nilai sudutnya positif, maka fungsi trigonometri yang digunakan adalah sinus atau tangen
lalu pada sudut 90° sampai 180° (kuadran II) nilai nya negatif, maka fungsi trigonometri diatas cosinus atau tangen
dari kedua kesimpulan diatas, maka jelas fungsi yang dipakai adalah tangen. perhatikan bahwa
tan 45° = 1
maka
4 tan 45° = 4
maka kemugkinan fungsi diatas berbentuk
4 tan x°
cek
4 tan 135° = 4 tan (180° - 45°) = 4 (-tan 45°) = 4.(-1) = 4×(-1) = -4 (sesuai)
4 tan 225° = 4 tan (180 + 45°) = 4 tan 45° = 4×1 = 4 (sesuai)
Jadi fungsi trigonometri yang dipakai adalah 4 tan x°
3. Diagram 5 shows the graph of a quadratic function y = f(x)
a. y = 21+4x-x²
0 = 21+4x-x²
0 = (7-x)(3+x)
x = 7 atau x = -3
b. mencari sumbu simetri di turunan pertama:
y = 21+4x-x²
y' = 4 - 2x ; subtitusi y' = 0 (karena pada titik puncak, m=0)
0 = 4 - 2x
2x = 4
x = 2 ← sumbu simetri
4. ##Quiz #13 ##• english edition• big point• no spam• show the way and graph Use the Parabola tool to graph the quadratic function.f(x) = 2x² + 8x + 10Graph the parabola by first plotting its vertex and then plotting a second point on the parabola
Answer and the explanation with steps:
Vertex is the lowest/highest point of a curve = titik puncak
Second point could be when the value of x = 0, or if the value of y = 0
Therefore
Find y if x = 0
y = 2·0² + 8·0 + 10
y = 10
Point = (0, 10)
Find another point if the y = 10, because a curve has multiple pairs of coordinates with the same value of y.
10 = 2x² + 8x + 10
2x² + 8x = 0
Factor it!
2x(x+4) = 0
x = -4
Point = (-4, 10)
Then find the vertex of the curve
Find the x with the equation [tex]\displaystyle\sf-\frac{b}{2a}[/tex]
from the quadratic equation 2x² + 8x + 10,
a = 2, b = 8, c = 10
Therefore x of the vertex point = -8/(2×2) = -8/4 =
-2
Find the y
y = 2·-2² + 8·-2 + 10 = 8 - 16 + 10 =
2
The vertex point = (-2, 2)
Which makes the vertex point of the curve the lowest.
The left side of the curve from the vertex point has the same size with the right side of the curve from the vertex point, plotted as in the picture below. Mark those three points: (-4, 10), (-2, 2) and (0, 10). Connect those points by drawing a downward line from the left and upward line to the right, ensure that the line is curvaceous enough to form a curve...
[Lihat gambar]
#NoGoogleTranslate
_____________
#Jenius - kexcvi
Jawab:
Penjelasan dengan langkah-langkah:
parabola tool mungkin artinya bikin parabola dengan alat graphing (misal geogebra)
f(x) bisa diubah jadi bentuk vertex nya dengan kuadrat sempurna
[tex]f(x) = 2x^2+8x+10 = 2(x^2+4x+5)\\\\f(x) = 2((x+2)^2 + 1)\\\\f(x) = 2(x+2)^2 + 2 \to \text{ vertex : } (-2,2)[/tex]
titik kedua : misalkan x = -1 => y = 4 => (-1,4)
sebenarnya cukup dengan 1 titik (dan diketahui koefisien kuadrat) saja yaitu vertex nya sudah cukup untuk menggambar grafik f(x), karena hanya ada 1 parabola yang memiliki 1 titik puncak jika diketahui koefiesien kuadratnya.
dengan geogebra ini bisa langsung dilakukan dengan mengetikkan :
[tex]f(x) = 2(x+2)^2 + 2[/tex]
pada bagian algebra
Cara 2 menggambar f(x) di geogebra : mencari titik fokus dan garis direktrix f(x)
f(x) memiliki 1 titik fokus F(a,b) dan garis direktrix y = k
kedua informasi tersebut bisa dicari dengan persamaan :
[tex]y = \dfrac{1}{2(b-k)} (x-a)^2 + \dfrac{b+k}{2}[/tex]
[tex]f(x) = 2(x+2)^2 + 2 \to a = -2\\\\\dfrac{1}{2(b-k)} = 2, \dfrac{b+k}{2} = 2\\\\b-k = \dfrac{1}{4}, b+k = 4 \to b = \dfrac{17}{4}, k = \dfrac{15}{8}[/tex]
lalu untuk membuat grafik f(x) dengan opsi parabola :
1) pada bagian algebra :
- buat titik fokus dengan mengetikkan : (2, 17/8)
- buat garis direktrix dengan mengetikkan : y = 15/8
2) pergi ke bagian tools => conics => klik Parabola
Untuk menggunakan opsi Parabola pertama klik titik fokus, lalu klik garis direktrix nya
5. to Activated the pin control, first you have to press menu. then select up,select security , and select the function codes, next, sepeck pin control then,
Penjelasan:
MAAF MAKSUDNYA GIMANA YA
6. Look at the graphWhat is the gradient of the line JKSelect one:a. 1/2b. 2c. -1/2d. -2
Jawaban:
gradient is equal to
[tex] \frac{y2 - y1}{x2 - x1} = \frac{7 - 3}{4 - 6} = \frac{4}{ - 2} = - 2[/tex]
7. Demand function: Q = 81 − 0.05 P Supply function: Q = −24 + 0.025 P (a)Calculate the equilibrium price and quantity, algebraically and graphically. (b)Graph the supply and demand function, showing the equilibrium.
Jawaban:
sorry gua gk paham
Penjelasan:
saya tidak mengerti8. Write edo’s statement that matches each of the pictures below
Jawaban:
1. Father found logs on the ground.
2. My brother and i agree that the tree logs could be made to a slide.
3. Father agree with our idea.
4. My father began to saw the tree logs.
5. Me and my bother then sand down the tree.
6. We placed the log to figure out the design.
7. Me and my brother began to colour the slide.
8. The slide is finally done.
(maaf kalau tidak sesuai atau aneh, semoga membantu. Good luck <3)
Penjelasan:
9. what is the function select conservation in gmail
Jawaban:
to select a conversation in gmail
Hope it helps and sorry if I'm wrong ^^
10. the function of analytical exposition to persuade the readers or listeners that
jawaban:
fungsi eksposisi analitis untuk meyakinkan pembaca atau pendengarnya
Maaf Kalau Salah: )
11. In an AC circuit, the current / is given by l = 4.8sin(60pi - pi/2) Find the amplitude, period, and phase shift of this function, and then graph the function through two cycles.
Jawaban:
cari aja di google
Penjelasan dengan langkah-langkah:
bingung
12. What is the function of that palace Airport
Airplane..
maafKloSalah..Airport is the place when the Airplane is stop.
13. What do you know about recount text? It is a kind of text that the function is to retell the events in the past It is a kind of text that the function is to describe the events in the past It is a kind of text that the function is to retell the events now It is a kind of text that the function is to amuse the readers with the events in the past
Jawaban:
it id a kind of text that the function is to retsil the event now
Jawaban:
It is a kind of text that the function is to retell the events in the past.
Penjelasan:
1) Recount text is a text thet telling the reader about one story, action or activity. Its goal is to entertaining or informing the reader.
2) Recount text is a text which retell events or experiences in the past.
Generic Structure of Recount text :
1. Orientation
2. Events
3. Reorientation
Grammar used in Recount Text :
1) Using past tense
2) Using action verb
3) Adjectives
semoga membantu, mohon koreksinya
14. drew a line to join each of the subject pronouns to the object pronoun that matches
Jawaban:
i - me
he - him
it - it
she - her
they - them
you - you
we - us
Subject Pronoun
IYouWeTheySheHeItObject Pronoun
MeYouUsThemHerHimItThe same number is their couples.
15. the second please write the function and value of that song
Jawaban:
lagu yg mana nih?
kan ga jls soalnya.
16. What is the function of that place?
Jawaban:
to live animals that are about to become extinct
Penjelasan:
maaf kalau salah y
to understand the types of animals and learn to understand the types of animals17. What is the function of that palace Airport
is a place for takeoff, landing aircraft, and the movement on land aircraft
18. Read this dialogue. What can we learn about Daniar? *She is such a good woman that she won the matches.She is so good runner that she won all matches.She is so good that she won the matches.She is such a good runner that she won all matches.She is a good runner that she won.
Jawaban:
She is so good runner that she won all matches.
19. artinya what is the function of that room ?
Jawaban:
apa fungsi dari ruangan itu?
Jawaban:
apakah fungsi dari ruangan tersebut?.
20. For the function f, find the indicated limit or function value, or state that it dose not exist.
Jawaban:
fuck .......................
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on
November 13, 2022
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