math

1. find the values of s for which each function is continous:
f(x) = [ x if x less than or equal to 1]
[2x-1 if x greater than 1]
2. determine all values of x at which the function is discontinuous:
f(x) = (x^2-2x)/(x^2-3x+2)

Could someone please tell me how to do these problems I'm lost.

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