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midterm09

# midterm09 - L Vandenberghe EE103 Midterm Exam You have time...

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Formulas Vectors and matrices Relation between inner product and angle: x T y = bardbl x bardbl bardbl y bardbl cos negationslash ( x, y ) Flop counts for basic operations ( α is a scalar, x and y are n -vectors, A is an m × n -matrix, B is an n × p -matrix) Inner product x T y : 2 n 1 flops ( 2 n flops for large n ) Vector addition x + y : n flops Scalar multiplication αx : n flops Matrix-vector product Ax : m (2 n 1) flops ( 2 mn flops for large n )
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