# mathodman

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1. ## Calculating a determinant of specific matrix

Hi, yeah it definitely makes sense, this is a problem from an old exam so there must be a solution for sure
2. ## Calculating a determinant of specific matrix

its not, look at descriptions above

4. ## Calculate the determinant of the matrix

I don't know, i kind of got stuck on this one.
5. ## prove a property

Its not a homework, lol. Just an interesting problem, that i don't quite understand. I think that the only option is that A matrix is zero matrix or maybe i have forgotten some theorem or criteria
6. ## Calculate the determinant of the matrix

Let for j = 0,. . ., n aj = a0 + jd, where a0 and d are fixed real numbers. Calculate the determinant of the matrix A of size (n + 1) × (n + 1). Matrix A is below
7. ## prove a property

Let a 3 × 3 matrix A be such that for any vector of a column v ∈ R3 the vectors Av and v are orthogonal. Prove that At + A = 0, where At is the transposed matrix.
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