Intervals in which a function is concave up or down
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For each of the following equations, would you please state the intervals for which it is concave up and for which it is concave down?
y = 10xe^-x
f(x) = x^2 - 4/x + 1
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Solution Summary
This solution discusses the method to find the intervals in which a function is concave up or down.
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y = 10xe^-x
Differentiating, we get
y'=10[e^-x](1-x).
We know y increases or decreases according as y'>0 ...
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