For some a, b, let f(x) = vmatrix a+ x x & 1 & b a & 1+ x x & b a & 1 & b+ x x vmatrix , x 0, _ x 0 f(x) = +...

Question

For some a, b, let f(x) = vmatrix a+ x x & 1 & b a & 1+ x x & b a & 1 & b+ x x vmatrix , x 0, _ x 0 f(x) = + a + b. Then ( + + )^2 is equal to :

Accepted Answer

(4)

JEE Main 2025 Mathematics question