integral from 0 to pi of cos(1/2 x)

Lösung

\int_{0}^{π} cos (\frac{1}{2} x) d x

2

Schritte zur Lösung

\int_{0}^{π} cos (\frac{1}{2} x) d x

Wende U-Substitution an

= \int_{0}^{\frac{π}{2}} cos (u) \cdot 2 d u

Entferne die Konstante:

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

= 2 \cdot \int_{0}^{\frac{π}{2}} cos (u) d u

Nutze das gemeinsame Integral :

\int cos (u) d u = sin (u)

= 2 [sin (u)]_{0}^{\frac{π}{2}}

Berechne die Grenzen:

1

= 2 \cdot 1

Vereinfache

= 2

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