Given the piecewise function
f(x)={(-1,x<-1),(x^(2),-1<=x<2),(-2x 7,x>2):}
the domain of
f
is: Select one:
(-\infty ,2)\cup (2,\infty )x<-1-1 all real numbers (-\infty ,2)\cup (2,\infty ) x<-1 none of these Clear my choice