Round 11: Tossup 4

M. L. Glasser’s “master theorem” (-5[1])showed that this technique can simplify problems construed as Cauchy principal values. The first step of Cardano’s method eliminates a square term by performing this technique. (0[1])Lambda calculus is based on binding and this technique for variables. The expression, “a squared minus x squared” in (*) integrals typically suggests the use of this technique with sine of x. In AP Calculus, the (10[1])variable (10[1])u (10[1])is commonly used as part of this technique during integration. For 10 points, solving an equation by replacing a complicated expression with an equivalent term is an example of what technique? ■END■

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