HOTS
(Higher Order Thinking Skills)
Program Studi Matematika IPA 2019
Persiapan Ujian Matematika IPA 2019
Jawaban Ujian Matematika IPA 2019
36. Nilai a yang memenuhi a ∫1 12x(x2 + 1)2dx = 14 adalah ...
B. -1
C. 0
D. 1/2
E. 1
Jawaban : C
U = x2 + 1
dU = 2x dx
6dU = 12x dx
a ∫1 12x(x2 + 1)2dx = 14
a ∫1 6 (U)2dU = 14
6a ∫1 (U)2dU = 14
6 . 1/3 [U3]a1 = 14
2 . [(x2 + 1)3]a1 = 14
2 . (8 - (a2 + 1)3) = 14
8 - (a2 + 1)3= 7
1 = (a2 + 1)3
1 = a2 + 1
0 = a2
a = 0
>> Soal 37
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