# Piecewise function radians and numbers ?

1. Feb 29, 2012

### fran1942

Hello, I have encountered the following piecewise function:

(x − 1)^2 if x > 1
tan x if −π/2 < x ≤ 0

How would I interpret/graph this, as it seems to be referring to radians and regular numbers ?
Thanks for any help.

2. Feb 29, 2012

### Vorde

Radians are a way to name angles. With radians, you would say pi/2 radians. pi/2 is just a number, equal to approx 1.57

3. Mar 1, 2012

### HallsofIvy

Staff Emeritus
Your function, by the way, is not defined for $0< x\le 1$.

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