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calculus homework 7 - obiahu(vo879 HW07 Schultz(56395 This...

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obiahu (vo879) – HW07 – Schultz – (56395) 1 This print-out should have 13 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. 001 10.0 points Find y when xy + 5 x + 4 x 2 = 3 . 1. y = - y + 5 + 4 x x 2. y = - ( y + 5 + 8 x ) 3. y = 5 + 4 x - y x 4. y = y + 5 + 4 x x 5. y = y + 5 + 8 x x 6. y = - y + 5 + 8 x x 002 10.0 points Find dy dx when 3 x + 4 y = 8 . 1. dy dx = 4 3 parenleftBig x y parenrightBig 3 / 2 2. dy dx = 4 3 ( xy ) 1 / 2 3. dy dx = 3 4 ( xy ) 1 / 2 4. dy dx = 3 4 parenleftBig y x parenrightBig 3 / 2 5. dy dx = - 3 4 parenleftBig y x parenrightBig 3 / 2 6. dy dx = - 4 3 parenleftBig x y parenrightBig 3 / 2 003 10.0 points Find dy/dx when y + x = 2 xy . 1. dy dx = radicalBig y x + 1 2 - radicalBig x y 2. dy dx = radicalBig y x - 1 1 - radicalBig x y 3. dy dx = radicalBig y x + 1 2 + radicalBig x y 4. dy dx = radicalBig y x - 1 1 + radicalBig x y 5. dy dx = radicalBig y x - 1 2 + radicalBig x y 6. dy dx = radicalBig y x + 1 1 - radicalBig x y 004 10.0 points If y = y ( x ) is defined implicitly by 5 y 2 - xy - 30 = 0 , find the value of dy/dx at (25 , 6).
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