Question

If A `= [(1,2),(2,1)]` and f(x) = (1 + x) (1 - x), then f(a) is ____________.

विकल्प

• `-4 [(1,1),(1,1)]`

• `-8 [(1,1),(1,1)]`

• `4 [(1,1),(1,1)]`

• None of these

Answer 1

If A `= [(1,2),(2,1)]` and f(x) = (1 + x) (1 - x), then f(a) is `underline(-4 [(1,1),(1,1)]`.