convex functions convex functions convex functions convex functions convex functions convex functions convex functions convex functions convex functions convex functions convex functions convex functions convex functions convex functions convex functions convex functions convex functions convex functions convex functions convex functions convex functions convex functions convex functions convex functions convex functions convex functions convex functions convex functions convex functions convex functions convex functions convex functions convex functions convex functions convex functions convex functions convex functions convex functions convex functions convex functions convex functions convex functions convex functions convex functions convex functions convex functions convex functions convex functions convex functions convex functions convex functions convex functions convex functions convex functions convex functions convex functions convex functions convex functions convex functions convex functions .
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concave functions concave functions concave functions concave functions concave functions concave functions concave functions concave functions concave functions concave functions concave functions concave functions concave functions concave functions concave functions concave functions concave functions concave functions concave functions concave functions concave functions concave functions concave functions concave functions concave functions concave functions concave functions concave functions concave functions concave functions concave functions concave functions concave functions concave functions concave functions concave functions concave functions concave functions concave functions concave functions concave functions concave functions concave functions concave functions concave functions concave functions concave functions concave functions concave functions concave functions concave functions concave functions concave functions concave functions concave functions concave functions concave functions concave functions concave functions concave functions concave functions,
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