integral from 0 to 1 of (2-x^2)^{3/2}

Lösung

\int_{0}^{1} (2 - x^{2})^{\frac{3}{2}} d x

\frac{6 π + 16}{16}

Dezimale

2.17809 \dots

Schritte zur Lösung

\int_{0}^{1} (2 - x^{2})^{\frac{3}{2}} d x

Wende integrale Substitution an

= \int_{0}^{2} \frac{( 8 - u ^{2} ) ^{\frac{3}{2}}}{16} d u

Entferne die Konstante:

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

= \frac{1}{16} \cdot \int_{0}^{2} (8 - u^{2})^{\frac{3}{2}} d u

Wende die partielle Integration an

= \frac{1}{16} [u (8 - u^{2})^{\frac{3}{2}} - \int - 3 u^{2} (8 - u^{2})^{\frac{1}{2}} d u]_{0}^{2}

\int - 3 u^{2} (8 - u^{2})^{\frac{1}{2}} d u = - 3 (\frac{1}{4} u^{3} (- u^{2} + 8)^{\frac{1}{2}} + 8 arcsin (\frac{u}{2 \cdot 2 ^{\frac{1}{2}}}) - 4 sin (2 arcsin (\frac{u}{2 \cdot 2 ^{\frac{1}{2}}})))

= \frac{1}{16} [u (8 - u^{2})^{\frac{3}{2}} - (- 3 (\frac{1}{4} u^{3} (- u^{2} + 8)^{\frac{1}{2}} + 8 arcsin (\frac{u}{2 \cdot 2 ^{\frac{1}{2}}}) - 4 sin (2 arcsin (\frac{u}{2 \cdot 2 ^{\frac{1}{2}}}))))]_{0}^{2}

Vereinfache

= \frac{1}{16} [u (8 - u^{2})^{\frac{3}{2}} + 3 (\frac{1}{4} u^{3} (- u^{2} + 8)^{\frac{1}{2}} + 8 arcsin (\frac{u}{2 \cdot 2 ^{\frac{1}{2}}}) - 4 sin (2 arcsin (\frac{u}{2 \cdot 2 ^{\frac{1}{2}}})))]_{0}^{2}

Berechne die Grenzen:

6 π + 16

= \frac{1}{16} (6 π + 16)

Vereinfache

= \frac{6 π + 16}{16}

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