Matematika Sekolah Menengah Atas KUIS Sebut daerah hasil f(x) = 2x+5

patricklangworthulv – May 11, 2023

KUIS
Sebut daerah hasil f(x) = 2x+5

f : x => 2x + 5

domain (misal) : {-5 < x ≤ 4, xR}

Hasil pemetaan fungsi :

• f : x =⟩ 2x + 5 = 2.-4 + 5 = -8 + 5 = -3

• f : x =⟩ 2x + 5 = 2.-3 + 5 = -6 + 5 = -1

• f : x =⟩ 2x + 5 = 2.-2 + 5 = -4 + 5 = 1

• f : x =⟩ 2x + 5 = 2.-1 + 5 = -2 + 5 = 3

• f : x =⟩ 2x + 5 = 2.0 + 5 = 5

• f : x =⟩ 2x + 5 = 2.1 + 5 = 2 + 5 = 7

• f : x =⟩ 2x + 5 = 2.2 + 5 = 4 + 5 = 9

• f : x =⟩ 2x + 5 = 2.3 + 5 = 6 + 5 = 11

• f : x =⟩ 2x + 5 = 2.4 + 5 = 8 + 5 = 13

Pertanyaan: Sebut daerah hasil f(x) = 2x + 5

Jawaban: Bilangan ganjil

f(-3) = 2x + 5

= 2(-3) + 5

= -6 + 5

= -1

f(-2) = 2x + 5

= 2(-2) + 5

= -4 + 5

= 1

f(-1) = 2x + 5

= 2(-1) + 5

= -2 + 5

= 3

f(0) = 2x + 5

= 2(0) + 5

= 0 + 5

= 5

f(1) = 2x + 5

= 2(1) + 5

= 2 + 5

= 7

f(2) = 2x + 5

= 2(2) + 5

= 4 + 5

= 9

f(3) = 2x + 5

= 2(3) + 5

= 6 + 5

= 11

f(4) = 2x + 5

= 2(4) + 5

= 8 + 5

= 13

f(5) = 2x + 5

= 2(5) + 5

= 10 + 5

= 15

f(7) = 2x + 5

= 2(7) + 5

= 14 + 5

= 19

dst.

Range : {-1, 1, 3, 5, 7, 9, 11, 13, 15, ..., 19dst}

Kesimpulan: Dapat disimpulkan bahwa daerah hasil f(x) = 2x + 5 adalah bilangan ganjil.

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