Question

Q. ( +20 )

• f(x) = x!! × x³ + 8x
• f(5) = . . .​

Answer 1

f(x) = x!! × x³ + 8x

f(5) = 5!! × 5³ + 8(5)

f(5) = ( 5.3.1 ) × ( 5.5.5 ) + 40

f(5) = 15 × 125 + 40

f(5) = 1.875 + 40

f(5) = 1.915

Answer 2

Jawaban:

f(5) = 1.915

Penjelasan dengan langkah-langkah:

f(x) = x!! × x³ + 8x

f(5) =

• f(5) = 5!! × 5³ + 8(5)
• f(5) = (5×3×1) × (5×5×5) + 40
• f(5) = (15×1) × (25×5) + 40
• f(5) = 15 × 125 + 40
• f(5) = 1.875 + 40
• f(5) = 1.915