Most people overestimate the importance of f(x) relative to f'(x). Where you're going matters more than where you are. This is not just a feel-good hippy aphorism. Getting this is why traders and startup founders split the top spots in the Forbes 400.
Perhaps worth noting that the ratio f(x)/f'(x) arises naturally in Newton's zero-finding iteration; it's precisely the amount by which the nth rough estimate of a zero of f(x) exceeds the (n+1)st.
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Yes it's related to Abraham Lincoln quote : " If you're going keep going"
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