xenon
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1,056
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### Questions (57)

 8 Getting the inverse of a lower/upper triangular matrix 8 Show that $\operatorname{rank}(A+B) \leq \operatorname{rank}(A) + \operatorname{rank}(B)$ 8 Determining if a quadratic is always positive 6 Column Vectors orthogonal implies Row Vectors also orthogonal? 6 Reason for reversing the order when transpose and inverse of a group of matrices

### Reputation (1,056)

 +5 How can I find the expected value due to the trials instead of simply expected value of trials of a geometric distribution? +5 Show that $\operatorname{rank}(A+B) \leq \operatorname{rank}(A) + \operatorname{rank}(B)$ +10 How to prove $\text{Rank}(AB)\leq \min(\text{Rank}(A), \text{Rank}(B))$? +5 Why composite transformations are multiplied to the right side?

 14 How to prove $\text{Rank}(AB)\leq \min(\text{Rank}(A), \text{Rank}(B))$? 0 Recursive matrices raised to the kth power

### Tags (18)

 14 linear-algebra × 36 0 geometry × 3 0 matrices × 34 0 inequality × 2 0 probability × 15 0 transformation × 2 0 statistics × 11 0 probability-distributions 0 vector-spaces × 4 0 quadratic-forms

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