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anonymous

  • 5 years ago

how do I combine this function? if f(x)=x^2+5x-6 and g(x)=x-1, find (f.g)(x) and (f/g)(x)

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  1. anonymous
    • 5 years ago
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    For the second part, (f/g)(x), just use long or synthetic division. It is saying to divide f(x) by g(x). You should get (x + 6) as you answer. The first part of the problem is unclear. Is it saying f(g(x)),which means f of g of x, or is it saying f(x) times g(x)?

  2. anonymous
    • 5 years ago
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    thanks for your reply! im not sure but thats just what it looked like. the dot was in the middle though (f (with dot in middle) g)(x)

  3. anonymous
    • 5 years ago
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    Well if it was (fog) which means the same thing as f(g(x)), Then just sub the function g(x) wherever you see an 'x' in the f(x) function. You should get: x^2 +3x -10 Or in factored form... (x+5)(x-2) 2. If it was (f*g)(x), meaning f times g, Then multiply the two functions and obtain a polynomial to the 3rd degree: (x^2 +5x - 6)(x-1) = x^3 + 6x^2 - 11x +6 Or in factored form... (x-1)(x-1)(x+6)

  4. anonymous
    • 5 years ago
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    thank you for your help!!

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