Integral x akar 2x+1 dx
Matematika
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Pertanyaan
Integral x akar 2x+1 dx
1 Jawaban
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1. Jawaban LOVEJOY
Integral
∫ x√2x + 1 dx
= ∫ x√2x dx + ∫ 1 dx
= ∫ u/2 . √u/1 . 1/2 du + √1 dx
= ∫ u√u/2 . 1/2 du + √1 dx
= ∫ u√u/4 du + √1 dx
= 1/4 ∫ u√u du + √1 dx
= 1/4 ∫ u^3/2 du + √1 dx
= 1/4 (2/5 u^5 / 5 + C1 + √1 dx
= 1/4 (2u^5/2 / 5) + C + √1 dx
= 1/4 (2u^5/2 / 5) + C + (x + C2)
= (2u^5/2 / 20) + x + C
= (u^5/2 / 10) + x + C
= [(2x)^5/2 / 10] + x + C
= [1/10 (2x^5/2)] + x + C