Rate of change from 1 to 2 for f(x)=2x^3 + x
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Apr8-06, 07:57 AM
So you can solve it if the function is 2x^3, but not if it's 2x^3+x? What's the difference, conceptually?
f(x)=2x^3+x, so what is f(2)? And what is f(1)?