Sunday

December 21, 2014

December 21, 2014

Posted by **chelsea** on Wednesday, May 4, 2011 at 4:34pm.

- calculus -
**Reiny**, Wednesday, May 4, 2011 at 6:08pmtake the derivative:

2x + (Ax)(2y)dy/dx + Ay^2 + 3By^2 dy/dx = 0

.....

...

dy/dx = (-2x - Ay^2)/(2Axy + 3By^2)

at (3,2) dy/dx = -1

-1 = (-6 - 4A)/(12A + 12B)

..

4A + 6B = 3

also in original,

9 + 12A + 8B = 1

3A + 2B = -2

triple the last one, and subtract ....

5A=-9

A=-9/5

sub back in to get B = 17/10

(Was expecting "nicer" numbers. I might have made an arithmetic error, check my arithmetic)

**Answer this Question**

**Related Questions**

calculus - A curve passes through the point (1,-11) and it's gradient at any ...

calculus - suppose a price-demand function p(x) is defined implicitly by x= p^3-...

calculus - i'm having trouble with a problem in my calc class...it isn't really ...

Calculus - The line that is normal to the curve x^2=2xy-3y^2=0 at(1,1) ...

Calculus - A cubic polynomial function f is defined by f(x) = 4x^3 + ax^2 + bx...

Calculus - A cubic polynomial function f is defined by f(x) = 4x^3 + ax^2 + bx...

Calculus - A function is implicitly defined by x^2 - 4y^2 = 9 Find the equation ...

Calculus Help Please!!! Check - A curve passes through the point (0, 2) and has...

calculus - Determine the equation of a curve in the xy-plane that passes through...

Maths: Intergration - The curve with equation y = ax^2 + bx + c passes through ...