Under Â§ 1505, however, a defendant can be convicted of obstruction of justice by obstructing a pending proceeding before Congress or a federal agency. A pending proceeding could include an informal investigation by an executive agency.
Piecewise is actually a way of expressing the function, rather than a characteristic of the function itself, but with additional qualification, it can describe the nature of the function.
f(x) = (x - 1)^2, x is greater than or equal to 3. This function behaves differently if the input is less than 3 or greater than or equal to 3. The most common piecewise function is the absolute value function. It works differently if the input is less than 0 than it does if the input is greater than 0.