Re: Row Rank = Column Rank?

you have 4 columns and only 3 rows. since row rank = column rank, you cannot have more than 3 linearly independent columns.

as you pointed out, you do indeed have 3 linearly independent rows. this means the row rank is 3. thus the column rank is 3, so one of the columns must be a linear combination of the other 3. you have discovered that column 4 fits the bill.

Re: Row Rank = Column Rank?

Thanks a lot.

I guess I needed to match the INDEPENDENT columns/rows rather than trying to match the number of dependent ones... Thanks again.