一个8x7x7的三维矩阵A，最小值在A(8,4,4),但是用find寻找却在(8,25,logical 1)

size(A) = [8 7 7]
[ind1,ind2,ind3]=find(A==min(min(min(A))))
请问为什么得到的ind1=8, ind2 = 25, ind3 = logical 1 ?
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