SOLUTION: Question-- let f(x)= x2 +3x - 1 and g(x) = x - 1 find and simplify (f o g) (x) What i have so far: g(-1) = -1 - 1 = 0 f(0) = (0) squared + 3 (0) - 1 = -1 Is th

Algebra.Com
Question 54141: Question-- let f(x)= x2 +3x - 1 and g(x) = x - 1 find and simplify (f o g) (x)
What i have so far:
g(-1) = -1 - 1 = 0
f(0) = (0) squared + 3 (0) - 1 = -1

Is this correct???

Answer by funmath(2933)   (Show Source): You can put this solution on YOUR website!
It appears that you are trying to simplify a composite function. I'm not sure why your substituting -1 and 0 into the functions unless you were given some instruction that I am unaware of.


fog(x)=f(g(x))=f(x-1) Which means you substitute the g function everywhere there's an x in the f function.





Happy Calculating!!!

RELATED QUESTIONS

3.Given that f(x) = 3x + 1, g(x) = x2 –2x - 6 , find (g o f)(-2) and f/g(0). (answered by robertb)
If f(x)=1-3x and g(x)=1/x2+1,find f(g(0)) and g(f(1)). (by 1/x2+1 i mean 1 over x... (answered by stanbon)
Let f(x) = 5x – 4 and g(x) = x2 – 1. Find each value. g(f(-1)) f(g(2))... (answered by stanbon)
If f(x)=1-3x and g(x)= 1/(x^2+1), find f(g(0)) and... (answered by Fombitz)
Let f(x)=x^2 +3x+9 and g(x)=(2x+3)/(x-2) Find... (answered by nerdybill)
Let f(x)=sqrt x+1 and g(x)= 1/x+1. Evaluate f(g(0)) (answered by Fombitz)
Let f(x)=x^2+4, and g(x)=x-1 Compute (g 0 f)(x), (f 0... (answered by funmath)
f(x)=x-2 and g(x) = x2 (squared) find each value (g o f)(4) (f o... (answered by nerdybill)
Use the functions f(x) = 2x +7, g(x) = x squared + 3x, and h(x) = 1/x-7 to find each of... (answered by funmath)