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Beliebt Rechnen >

integral from 4 to 2 of-(sqrt(16-x^2))/x

Lösung

\int_{4}^{2} - \frac{16 - x ^{2}}{x} d x

Lösung

2 (ln (\frac{3}{2} + 1) - 3 - ln (- \frac{3}{2} + 1))

+1

Dezimale

1.80372 \dots

Schritte zur Lösung

\int_{4}^{2} - \frac{16 - x ^{2}}{x} d x

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

= - \int_{2}^{4} - \frac{16 - x ^{2}}{x} d x

Entferne die Konstante:

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

= - (- \int_{2}^{4} \frac{16 - x ^{2}}{x} d x)

Wende U-Substitution an

= - (- \int_{23}^{0} - \frac{u ^{2}}{- u ^{2} + 16} d u)

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

= - (- (- \int_{0}^{23} - \frac{u ^{2}}{- u ^{2} + 16} d u))

Entferne die Konstante:

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

= - (- (- (- \int_{0}^{23} \frac{u ^{2}}{- u ^{2} + 16} d u)))

Wende integrale Substitution an

= - (- (- (- \int_{0}^{\frac{3}{2}} \frac{4 v ^{2}}{- v ^{2} + 1} d v)))

Entferne die Konstante:

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

= - (- (- (- 4 \cdot \int_{0}^{\frac{3}{2}} \frac{v ^{2}}{- v ^{2} + 1} d v)))

\frac{v ^{2}}{- v ^{2} + 1} = \frac{1}{- v ^{2} + 1} - 1

= - (- (- (- 4 \cdot \int_{0}^{\frac{3}{2}} \frac{1}{- v ^{2} + 1} - 1 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

= - (- (- (- 4 (\int_{0}^{\frac{3}{2}} \frac{1}{- v ^{2} + 1} d v - \int_{0}^{\frac{3}{2}} 1 d v))))

\int_{0}^{\frac{3}{2}} \frac{1}{- v ^{2} + 1} d v = \frac{1}{2} (ln (\frac{3}{2} + 1) - ln (- \frac{3}{2} + 1))

\int_{0}^{\frac{3}{2}} 1 d v = \frac{3}{2}

= - (- (- (- 4 (\frac{1}{2} (ln (\frac{3}{2} + 1) - ln (- \frac{3}{2} + 1)) - \frac{3}{2}))))

Vereinfache

- (- (- (- 4 (\frac{1}{2} (ln (\frac{3}{2} + 1) - ln (- \frac{3}{2} + 1)) - \frac{3}{2})))) : 2 (ln (\frac{3}{2} + 1) - 3 - ln (- \frac{3}{2} + 1))

= 2 (ln (\frac{3}{2} + 1) - 3 - ln (- \frac{3}{2} + 1))

Graph

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