c thr is no way to find out whether the answer is correct in convolution method
but u can always verify your answer by another method
method
1> graphical ---- no way to find ans is correct or not
2> matrix--------usually correct way
h
| 1 2 4
-------- |--------------------------
1 | 1 2 4
2 | 2 4 8
now move diagonally ie in the matrix region
1 then sum it = 1
2+2 = 4
4 +4 =8
8+0 =8
hence y
={1,4,8,8}
hope this solves ur doubt else u can mail me
Added after 2 minutes:
c thr is no way to find out whether the answer is correct in convolution method
but u can always verify your answer by another method
method
1> graphical ---- no way to find ans is correct or not
2> matrix--------usually correct way
h
| 1 2 4
-------- |--------------------------
1 | 1 2 4
2 | 2 4 8
now move diagonally ie in the matrix region
1 then sum it = 1
2+2 = 4
4 +4 =8
8+0 =8
hence y
={1,4,8,8}
hope this solves ur doubt else u can mail me
Added after 3 minutes:
c thr is no way to find out whether the answer is correct in convolution method
but u can always verify your answer by another method
method
1> graphical ---- no way to find ans is correct or not
2> matrix--------usually correct way
h
| 1 2 4
-------- |--------------------------
1 | 1 2 4
2 | 2 4 8
now move diagonally ie in the matrix region
1 then sum it = 1
2+2 = 4
4 +4 =8
8+0 =8
hence y
={1,4,8,8}
hope this solves ur doubt else u can mail me