Question

1) y=} -1, x<0 } 0, x=0 } 1, x>0 2) y= } 2x, x> или = 1 } x-3, x <1

Answer 1

А что за фигурные скобки?

Answer 2

It appears that you have provided two sets of equations. However, there seem to be missing or unclear parts in both of them. It's essential to have complete and unambiguous information to accurately interpret the equations.

For the first set of equations:

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1) y = } -1, x < 0   } 0, x = 0   } 1, x > 0

The format is not entirely clear. Typically, mathematical notation uses braces {} or brackets [] to represent domain and range of a function. However, there is no equation or function definition here. Additionally, it is not clear how the function is defined for different values of x. Please provide the complete and correct version of this equation if you need assistance.

For the second set of equations:

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2) y = } 2x, x > or = 1   } x-3, x < 1

Again, the notation is not entirely clear. It seems like you are trying to define a piecewise function. In this case, the function is defined in two parts:

1. For x greater than or equal to 1, y equals 2x.
2. For x less than 1, y equals x - 3.

If you have any further details or corrections for the equations, please provide them so that I can assist you properly.