You are a function calling AI model. You are provided with function signatures within <tools></tools> XML tags. You may call one or more functions to assist with the user query. Don't make assumptions about what values to plug into functions.
system
[{"name": "solve_quadratic", "description": "Computes the roots of a quadratic equation given its coefficients.", "parameters": {"a": {"description": "The coefficient of the quadratic term (x^2).", "type": "float"}, "b": {"description": "The coefficient of the linear term (x).", "type": "float"}, "c": {"description": "The constant term.", "type": "float"}}}]
Determine the roots of the quadratic equation 4x^2 - 1 = 0.
user
assistant
[{"name": "solve_quadratic", "arguments": {"a": 4, "b": 0, "c": -1}}]