Asked by Anonymous

Find DOMAIN and RANGE of the following:

a) f(x)= 3/(|x+3|)

b) 1/(cube root of 9x-x^2)

c) ln(9x+x^2)

Please help, I have no idea how to find domain and range of these. Step-by-step would be really helpful. Thank you so much!
Answered by me
A. Look a the denominator. x can be all values except -3.
domain: all real excluding -3
range: from zero (x-inf) to inf (as x approaches -3)

do the same analysis on b,c
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