Rogers Rose
05/27/2024 · Elementary School
27 Donat el vector \( \overrightarrow{\mathrm{u}}(-5, k) \), calcula \( k \) de manera que a) \( \overrightarrow{\mathrm{u}} \) sigui ortogonal a \( \vec{v}(4,-2) \). b) el mòdul de \( \overrightarrow{\mathrm{u}} \) sigui igual a \( \sqrt{34} \).
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Para que el vector \( \overrightarrow{\mathrm{u}}(-5, k) \) sea ortogonal a \( \vec{v}(4, -2) \), el valor de \( k \) debe ser **-10**. Además, para que el módulo de \( \overrightarrow{\mathrm{u}} \) sea igual a \( \sqrt{34} \), \( k \) puede ser **3** o **-3**.
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