SOLUTION: How do you plot this funcion, f(x)=(2x^2)+4x, into this forumla, (f(x)-f(a))/(x-a) (lim as x approaches a).

Question 181622: How do you plot this funcion, f(x)=(2x^2)+4x, into this forumla, (f(x)-f(a))/(x-a) (lim as x approaches a).
Answer by HyperBrain(694) (Show Source): You can put this solution on YOUR website!
f(x)=(2x^2)+4x
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When you want to find f(x)-f(a))/(x-a) (lim as x approaches a), you are saying that you want to differentiate f(x) with respect to x.
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Differentiating skill: if f(x)=axⁿ then f'(x)=anx^n-1 where f'(x) is the derivative of f(x).
f(x)=2x²+4x
f'(x)=2(2)x^2-1+4(1)x^1-0
f'(x)=4x-4
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That's it.
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HyperBrain!
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