1. The problem statement, all variables and given/known data dy/dx = (9x²)/(9y²-11) , y(1)=0 2. Relevant equations 3. The attempt at a solution I've found the particular solution: 3y³-11y = 3x³-3 The solution is defined for -⅓√11<y<⅓√11, What about the x values? Plugging the y values into the equation doesn't work of course..