Forms of Summation Notation 5. Sum of the squares of the variables: Ex = x,² +x,' +..+x,² i=1 Example Evaluate the following given that x, = 3, X, = 6, X3 = 1, X4 = 7, X5 = 7, y1 = 3, y, = 4, Y3 = 2, Y4 = 4, and y, = 3: %3D %3D %3D a. Ex, Ex + а. C. i=1 i=2 i=1 IM-

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