Solve for W My answer was But apparently thats wrong according to my teacher.
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Originally Posted by OzzMan Solve for W My answer was But apparently thats wrong according to my teacher. Square both sides of the equation: This is a quadratic equation. Use the formula to solve it.
What do you mean exactly? What I did was square both sides like you said and got Then I did
Originally Posted by OzzMan What do you mean exactly? What I did was square both sides like you said and got Then I did Unfortunately you forgot to divide the Vē by w. If you have a quadratic equation : Then this equation has the solutions: With your problem you have: a = 1 b = -2L c = -Vē Plug in these terms into the formula to get the solutions. (For confirmation only:
Just making sure I did this right How did you get
shouldn't it be a instead of ? According to the equation So the answer would be
Last edited by OzzMan; Feb 8th 2008 at 02:42 PM.
Originally Posted by OzzMan shouldn't it be a -2L instead of 2L? According to the equation So the answer would be Yes. Good pick-up. Earboth made a small sign error when he substituted for b: Originally Posted by earboth [snip] With your problem you have: a = 1 b = -2L c = -Vē Plug in these terms into the formula to get the solutions. (For confirmation only: L
Last edited by mr fantastic; Feb 8th 2008 at 05:21 PM. Reason: Fixed the color
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