Let S be the set of integer solutions to the equation 1+x2+x3+£4 = 30, where x; >0 for i = 1, 2, 3, 4. That is, S = {(x1,12, X3, T4) | Xi € Z and xi > 0 and r1 + 12 + x3 + 14 = 30}. (a) Find |S]. For i = 1, 2, 3, 4, define A; = {(x1, 12, x3, X4) E S | x¿ > 10}.
Let S be the set of integer solutions to the equation 1+x2+x3+£4 = 30, where x; >0 for i = 1, 2, 3, 4. That is, S = {(x1,12, X3, T4) | Xi € Z and xi > 0 and r1 + 12 + x3 + 14 = 30}. (a) Find |S]. For i = 1, 2, 3, 4, define A; = {(x1, 12, x3, X4) E S | x¿ > 10}.
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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