Question

Calculus :
Find ( f + g ), ( f - g ), (f g ), and (f/g) and state their domains.
a) f(x) = x pangkat 3 + 2x kuadrat , g (x)= 3x kuadrat - 1
b) f(x) = akar 1 + x , g(x) = akar 1 -x

Answer 1

A) F+g = x^3+2x^2 + 3x^-1 = x^4+2x^3+3 / x
    f - g = x^3+2x^2 -  3x^-1 = 1
    f  g = (3x^-1)^3 + 2(3x^-1) = 3x^2+6x
    f/g = x^3+2x^2 / 3x^-1 =