scienziato Posted November 3, 2012 Share Posted November 3, 2012 (edited) Suppose x and y are both differentiable functions of t and are related by the equation <br><br> x<sup>3</sup>-3y=y<sup>2</sup>+1/x+y-2<br><br> Find the rate at which x is changing when x=2 and y=1, if y is decreasing at 3 units per second.<br><br>I am getting -9/14 but computer iss saying that it is incorrect.<br><br>plz help me out<br><br> Edited November 3, 2012 by scienziato Link to comment Share on other sites More sharing options...
imatfaal Posted November 5, 2012 Share Posted November 5, 2012 Suppose xand y are both differentiable functions of t and are related by the equation x^3-3y=y^2+1/x+y-2 [MATH] x^3 - 3y =y^2 +\frac{1}{x+y-2}[/math] Find the rate at which x is changing when x=2 and y=1, if y is decreasing at 3 units per second. I am getting -9/14 but computer is saying that it is incorrect. plz help me out Tidied it up a bit - is that equation correct? You must get used to putting more brackets in - or use latex to make it clear. What have you got so far? Link to comment Share on other sites More sharing options...
scienziato Posted November 5, 2012 Author Share Posted November 5, 2012 (x3-3y)=(y2+1)/(x+y-2) Link to comment Share on other sites More sharing options...
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