Question

Let f(x) = (x2 + 3x – 4) and g(x) = (x + 4)

a. Find f • g and state the domain.
b. Find f/g and state the domain.

please go through this step by step if you canand i dont really understand this

Answer 1

domain for first one will be all real nos
for second it is
R-{-4}

Answer 2

how did you get that though i dont understand it can you go threw it step by step

Answer 3

for first it is direct since it is defined for all x
second is bit hard
ur f/g=((x2 + 3x – 4) / (x + 4))
now denominator will become zero in case of x=-4
which is not defined
so we have to eliminate it from our domain set

Answer 4

i dont see how you got -4 tho

Answer 5

can u tell me what is in denominator

Answer 6

i dont know what that is ... thats why i asked to explain it please

Answer 7

x^2+3x-4*x+4=x^3+3x^2-4x+4x^2+12x-16=x^3+7x^2+8x-16.,
domain all real no. it z for a.