change the value in a matrix

I have any matrix I need a code such that if the absolute value of a value in the matrix less than 3, then this value equal to zero.

for example if i have the matrix:

    A=[-1,4,3;1,5,-7;3,-2,9]

the answer will be:

    B=[0,4,0;0,5,-7;0,0,9]

Thank you

Answer 1

[per isakson]

Try

    >> B = A;
    >> B(abs(A)<=3) = 0
    B =
         0     4     0
         0     5    -7
         0     0     9

However, -7 isn't it "less than 3"?

Answer 2

[ateq alsaadi]

Thank you it works.