Posted by **david** on Tuesday, December 12, 2006 at 10:39pm.

dy/dx=2y^2 and if y=-1 when x=1, then when x=2, y=?

(you already posted this, but i still don't get it)

dy/dx = 2y^2

Integrating...y=2/3 y^3 + C

put 1,-1 into the equation, and solve for C

c=-1/3

so the equation is y=(2y^3)/3-1/3

then i have to find what y equals when x=2. how do i do that. there's no x in the equation.

Now, if the problem is dx/dy = 2y^2

then x=2/3 y^3 + C and you solve.

Recheck which it is.

## Answer This Question

## Related Questions

- Pre-calc - Find the effective rate of interest for 5.25% compounded quarterly. I...
- MATH - I NEED TO SOLVE FOR Y AND X im getting rele confused on this. ok here is ...
- Calc - Find a polar equation for the curve represented by the given Cartesian ...
- Math - I have got help from Damon on this question but all I need is help on ...
- Math - have got help from Damon on this question but all I need is help on ...
- Math - I have got help from Damon on this question but all I need is help on ...
- calc - What are the intercepting points of y^2=-4x and x^2=y I set both ...
- calculus help please - dy/dx = 2y^2 Integrating...y=2/3 y^3 + C put 1,-1 into ...
- Calc - Find the areas of the regions bounded by the lines and curves by ...
- Algebra - 45 ÷ 6t x 11x I have already posted this question and received an ...

More Related Questions