math-calculus

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i did this question long time ago and i realize today that at back of book answer be different.

write the following absolute value functions as piecewise functions.

g(x) = |x+1|

positive be x+1
negative be -(x+1) but in back of book it says negative one be -x-1 if x is less than -1. and i not understand.

  • math-calculus -

    surely you realize that -(x+1) = -x-1

  • math-calculus -

    |x+1| = -(x+1) if (x+1) < 0
    that is, if x < -1

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