Diket f(x)= px + 4 dgn gradien positif. Jika f(f(3)) – 4p=7, maka p bernilai?

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A. 1
B. √2
C. ½√2
D. 2

Tlng dijawab

Diket f(x)= px + 4 dgn gradien positif. Jika f(f(3)) – 4p=7, maka p bernilai?

F(3p+4) + 4 – 4p = 7
-p + 8 = 7
-p = 7-8
-p = -1
p = 1