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Giani
Giani asked in Science & MathematicsMathematics · 1 decade ago

Help with math question? Calculus level?

if x^2+xy=10 when x=2

dy/dx=?

Update:

if you can please explain how to do it? annd how u got your ANSWER. thanks!

2 Answers

Relevance
  • djin
    1 decade ago
    Favorite Answer

    x^2+xy=10

    y=(10-x^2)/x

    dy= -2x dx

    dy/dx=-4

  • ted s
    Lv 7
    1 decade ago

    2x + y + x [dy/dx] = 0, at x = 2 ..dy/dx =[ -4-3] / 2 = -7/2

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