Question

Q.

F(x) = x!! + x! - x⁵
F(8) = ... ?

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Answer 1

8!!= (8 × 6) × 4 × 2= (48 × 4) × 2= 192 × 2= 3848!= (8 × 7) × 6 × 5 × 4 × 3 × 2 × 1= (56 × 6) × 5 × 4 × 3 × 2 × 1= (336 × 5) × 4 × 3 × 2 × 1= (1.680 × 4) × 3 × 2 × 1= (6.720 × 3) × 2 × 1= (20.160 × 2) × 1= 40.320 × 1= 40.3208⁵= (8 × 8) × 8 × 8 × 8= (64 × 8) × 8 × 8= (512 × 8) × 8= 4.096 × 8= 32.768f(x) = x!! + x! - x⁵f(8) = 8!! + 8! - 8⁵f(8) = (384 + 40.320) - 32.768f(8) = 40.704 - 32.768f(8) = 7.936Kesimpulan hasil dari f(8) adalah : 7.936