Difference between revisions of "Selftest: Multiplication of matrices"
From Robotics
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<quiz display=simple> | <quiz display=simple> | ||
| − | {'''Which statement | + | {'''Consider the matrix multiplication <math>\mathbf{A}\cdot\mathbf{B}</math>. Which statement describes the requirements for this multiplication correctly?'''<br/> |
| − | |typ=" | + | |typ="()" } |
| − | <math>\ | + | - number of rows of <math>\mathbf{A}</math> has to equal number of colums of <math>\mathbf{B}</math> |
| − | < | + | - number of rows of <math>\mathbf{A}</math> has to equal number of rows of <math>\mathbf{B}</math> |
| + | + number of colums of <math>\mathbf{A}</math> has to equal number of rows of <math>\mathbf{B}</math> | ||
| + | - number of colums of <math>\mathbf{A}</math> has to equal number of colums of <math>\mathbf{B}</math> | ||
| − | {''' | + | {'''Which dimensions does the resulting matrix of a multiplication of an l-by-m with an m-by-n matrix have?'''<br/> |
| − | |typ=" | + | |typ="()" } |
| − | <math>\left[\begin{array}{ccc} | + | - m-by-m |
| − | + | + l-by-n | |
| + | - l-by-m | ||
| + | - m-by-n | ||
| + | |||
| + | |||
| + | {'''Mark the correct calculation specification for the following matrix multiplication:'''<br/> | ||
| + | |typ="()" } | ||
| + | <math> \left[\begin{array}{ccc} | ||
| + | a_{11} & a_{12} & a_{13}\\ | ||
| + | a_{21} & a_{22} & a_{23} | ||
| + | end{array}\right] | ||
| + | </math> | ||
| + | - m-by-m | ||
| + | + l-by-n | ||
| + | - l-by-m | ||
| + | - m-by-n | ||
</quiz> | </quiz> | ||
Revision as of 15:00, 4 July 2014
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