Question

this is a matrix question

Answer 1

Answer is 0 because matrix A is a zero matrix.

Answer 2

Answer is 1.
Matrix A =0.
f(x) =1 + x+x²+..... +x^20
f(A) = 1+ A + A² +..... +A^20
= 1+0=1 ... Answer.
Hope this is ur required answer.