Mathematica的一道很简单的函数应用题,

题目

Mathematica的一道很简单的函数应用题,
See the following statement.What does it do?Create a function that takes as input the matrix mat,and then for each element compares it with value [Tau],and if a value is below [Tau],it should be set to zero,else to 1.
mat = RandomInteger[100,RandomInteger[{15,25},2]]
我自己写的是
Resetlist[l_,x_] :=
For[i = 1,i

答案