where ,
 
,
 ..., 
 are nonnegative integrable functions on 
 which are all either monotonic increasing or monotonic
 decreasing.
Chebyshev Integral Inequality
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References
Gradshteyn, I. S. and Ryzhik, I. M. Tables of Integrals, Series, and Products, 6th ed. San Diego, CA: Academic Press, p. 1092, 2000.Referenced on Wolfram|Alpha
Chebyshev Integral InequalityCite this as:
Weisstein, Eric W. "Chebyshev Integral Inequality." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/ChebyshevIntegralInequality.html
 
         
	    
	
    
