[理工] 97交大線代-秩
問題:
Consider a 3x2 matrix A and a 2x5 matrix B.
How many possible dimensions of ker(AB) are there?
What are they?
題目亦收錄於黃sir線代及其應用四版上冊p4-104
解答看不太懂
為何AB為3x5矩陣 dim(ker(AB))就 <=5?
對這題沒想法
thanks
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