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Beliebt Rechnen >

integral from 1 to 16 of 1/(8-sqrt(x))

Lösung

\int_{1}^{16} \frac{1}{8 - x} d x

Lösung

2 (- 3 + 8 (ln (7) - 2 ln (2)))

+1

Dezimale

2.95385 \dots

Schritte zur Lösung

\int_{1}^{16} \frac{1}{8 - x} d x

Wende U-Substitution an

= \int_{1}^{4} \frac{2 u}{8 - u} d u

Entferne die Konstante:

\int a \cdot f (x) d x = a \cdot \int f (x) d x

= 2 \cdot \int_{1}^{4} \frac{u}{8 - u} d u

Wende U-Substitution an

= 2 \cdot \int_{7}^{4} - \frac{- v + 8}{v} d v

\int_{a}^{b} f (x) d x = - \int_{b}^{a} f (x) d x, a < b

= 2 (- \int_{4}^{7} - \frac{- v + 8}{v} d v)

Entferne die Konstante:

\int a \cdot f (x) d x = a \cdot \int f (x) d x

= 2 (- (- \int_{4}^{7} \frac{- v + 8}{v} d v))

Multipliziere aus

\frac{- v + 8}{v} : - 1 + \frac{8}{v}

= 2 (- (- \int_{4}^{7} - 1 + \frac{8}{v} d v))

Wende die Summenregel an:

\int f (x) \pm g (x) d x = \int f (x) d x \pm \int g (x) d x

= 2 (- (- (- \int_{4}^{7} 1 d v + \int_{4}^{7} \frac{8}{v} d v)))

\int_{4}^{7} 1 d v = 3

\int_{4}^{7} \frac{8}{v} d v = 8 (ln (7) - 2 ln (2))

= 2 (- (- (- 3 + 8 (ln (7) - 2 ln (2)))))

Vereinfache

= 2 (- 3 + 8 (ln (7) - 2 ln (2)))

Graph

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