#Adding and subtracting functions

7 messages · Page 1 of 1 (latest)

dark egret
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I’m having a lot of trouble with this. Can someone help and break it down for me? I would really appreciate it.

orchid galleon
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let's say f(x) = 2x+4 and g(x) = 4x^3-2x+1

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then (f+g)(x) = f(x) + g(x) = (2x+4)+(4x^3-2x+1)

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= 4x^3 + 5

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likewise (g-f)(x) = g(x) - f(x) = (4x^3-2x+1)-(2x+4)

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=4x^3 - 4x - 3