William Stein schrieb:
On Fri, Apr 2, 2010 at 10:11 AM, bb wrote:
Why does Sage not solve the equation? (The quadratic equation is just a
test.)
sage: x,y,a,b = var('x, y, a, b')
sage: solve([x - 2*y == a, x + 3*y == b],[x,y]);
sage: solve([x^2 + a*x + b == 0],x)
[x == -1/2*a - 1/2*sqrt(a
On Fri, Apr 2, 2010 at 10:11 AM, bb wrote:
> Why does Sage not solve the equation? (The quadratic equation is just a
> test.)
>
> sage: x,y,a,b = var('x, y, a, b')
> sage: solve([x - 2*y == a, x + 3*y == b],[x,y]);
> sage: solve([x^2 + a*x + b == 0],x)
> [x == -1/2*a - 1/2*sqrt(a^2 - 4*b), x ==
Why does Sage not solve the equation? (The quadratic equation is just a
test.)
sage: x,y,a,b = var('x, y, a, b')
sage: solve([x - 2*y == a, x + 3*y == b],[x,y]);
sage: solve([x^2 + a*x + b == 0],x)
[x == -1/2*a - 1/2*sqrt(a^2 - 4*b), x == -1/2*a + 1/2*sqrt(a^2 - 4*b)]
sage: solve([x - 2*y - a
