*If and only if characterizations of linear functions.*

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Displaying 101 - 110 of 1135

*The volumes of related tetrahedra are found by vector methods.*

*The AM-GM inequality, proof without words*

*Comparisons of averages lead to intuitive contradiction.*

*Approximate a solution to \(2^x = 5\).*

*The author gives a method for one of the standard types of differential equations.*

*Motivation via "magic with numbers" for properties of determinants*

*Existence of a limit for the series that defines Euler's constant*

*This proof is three lines long.*