Anonymous
Anonymous asked in Science & MathematicsMathematics · 7 years ago

Find each quantity if v= 3i-5j and w=-2i+3j?

||v||-||w||

2 Answers

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  • Ron W
    Lv 7
    7 years ago
    Best Answer

    ||v|| = √((3)² + (-5)²) = √(9 + 25) = √34

    ||w|| = √((-2)² + (3)²) = √(4 + 9) = √13

    ||v|| - ||w|| = √34 - √13 ≈ 2.2254

  • 3 years ago

    a) = 2(3i - 5j) + 3(-2i + 3j) = 6i - 6i -10j + 9j = -j b) = || 3i - 5j - 2i +3j || = || i - 2j || = (i - 2j) or (-i + 2j) c) = || 3i - 5j || - || -2i + 3j || = (5i - 8j) or (-5i + 8j) or (i - 2j) or (-i + 2j)

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