13. Diketahui π(π₯) = π₯ β 3 dan π(π₯) = 2π₯^3 + 5π₯, maka berapakah nilai dari (π+π)(π₯)?
a. 2π₯^3 + 6π₯ β 3
b. 2π₯^3 β 6π₯ β 3
c. 2π₯^3 β 5π₯ β 3
d. 2π₯^3 + 5π₯ β 3
e. 2π₯^3 + 6π₯ + 3
Jawaban :
π(π₯) = π₯ β 3
π(π₯) = 2π₯^3 + 5π₯
(π+π)(π₯) = f(x) + g(x)
(π+π)(π₯) = π₯ β 3 + 2π₯^3 + 5π₯
(π+π)(π₯) = 2π₯^3 + 6x - 3
Jawaban : A
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