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matthiasplappert avatar matthiasplappert commented on July 23, 2024

Nein, die Musterlösung ist richtig, wie einfaches Nachrechnen zeigt:

0 + t * r = (x, y, 1) mit r = (-1, 1, 2). Offensichtlich ist t = 1/2. Damit folgt für den Schnittpunkt mit der z-Ebene: s = 1/2 * (-1, 1, 2) = (-1/2, 1/2, 1). Normalisieren auf [0,1] ergibt dann die Lösung (wie in der Musterlösung auch) von uv = (1/4, 3/4).

from kit-musterloesungen.

jpaczia avatar jpaczia commented on July 23, 2024

Also berechnet sich s bzw t mit (1/2) + (r_j)/(2*r_i), wobei r_i die Komponente ist, deren Betrag am größten ist und r_j die beiden anderen? Für s wird dann bei r_j die Komponete eingesetzt die im Vektor weiter "oben" steht?

from kit-musterloesungen.

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