jika f(3x+1)=(2x+5).(×-1),maka nilai f (13)
Matematika
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Pertanyaan
jika f(3x+1)=(2x+5).(×-1),maka nilai f (13)
1 Jawaban
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1. Jawaban ristinanggraini
f(3x+1)=(2x+5).(x-1)
f(13)= ((2x+5).(x-1))-(3x+1)
f(13)=((2(13)+5).(13-1))-(3(13)+1)
f(13)= ((26+5).(12))-(39+1)
f(13)=((31).(12))-40
f(13)= 372-40
f(13)= 332
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