their graphs both pass through (2, y). If x= 2 and y= (4/x)+ 2, what is y?linuxux said:Homework Statement
curves with equation y=(4/x)+2 and y=ax^2+bx+c have the following properties:
a) there is a common point at x=2
So they have the same derivative at x= 2. What is the derivative of y= (4/x)+ 2 at x= 2? What is the derivative of y= ax^2+ bx+ c at x=2? Setting those equal gives you a second equation for a, b, c.b)there is a common tangent line at x=2
Well, yes it true that y= (4/1)+2= 6. If x= 1 then y= a+ b+ c= 6 which is a third equation for a, b, c. Solve those 3 equations for a, b, c.c)both curves pass through point (1,6)
You are welcome.thanks for help.
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