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A function f(x) is defined as follows : ...

A function f(x) is defined as follows :
`" "f(x)={:{(x-1",","when "x gt 0),(-(1)/(2)",","when "x = 0),( x+1",","when "xlt0):}`
Draw the graph of the function f(x). From the graph find the value of f(x) at `x=-(1)/(2)` and examine whether f(x) is continuous at x = 0.

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