Question 770739
Given the functions f(x)=1/x-3; g(x)=5x/x+4
Find
a.f(5)+g(-3)
b.(f+g)(x)
c.(g◦f)(x)
d.(f◦g)(-2)

I do 2 parts here:


a)  f(5)+f(-3) = 1/2 -15 = -14.5

b) (f+g)(x) = 1/x-3 + 5x/x+4 =  ((x+4)+5x(x-3))/(x-3)(x+4) = (5x^2-14x)/(x-3)(x+4)

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Thanks