20 best recipes from France: Everyone can taste the tenderness of France

20 best recipes from France: Everyone can taste the tenderness of France

Matematika Diketahui fungsi f(x) =ax+b jika f(1)=5 dan f(-1)=1
tentukan f(x) dan f(5)

Diketahui fungsi f(x) =ax+b jika f(1)=5 dan f(-1)=1
tentukan f(x) dan f(5)

Jawaban:

Fungsi :

f(x) = ax + b

f(1) dalam fungsi :

f(x) = ax + b

f(1) = a.1 + b = 5

1a + b = 5

f(-1) dalam fungsi :

f(x) = ax + b

f(-1) = a.-1 + b = 1

-1a + b = 1

Subtitusi :

1a + b = 5

-1a + b = 1

---------------- -

2a = 4

a = 4 : 2

a = 2

Nilai B

f(x) = ax + b

f(1) = 2.1 + b = 5

2 + b = 5

b = 5 - 2

b = 3

Bentuk fungsi :

f(x) = ax + b

f(x) = 2x + 3

Nilai f(5)

f(x) = 2x + 3

f(5) = 2.5 + 3

f(5) = 10 + 3

f(5) = 13

Semoga membantu :)

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Jadikan jawaban tercerdas ....

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