The largest value in the range of f(x)=2(a-x)(x+\sqrt{x^2+b^2}), x∈ R is (1) a^2+2b^2 (2) 2a^2+b^2 (3) a^2+b^2 (4) a^2-b^2

The largest value in the range of f(x)=2(a-x)(x+\sqrt{x^2+b^2}), x∈

1.	The largest value in the range of f(x)=2(a-x)(x+\sqrt{x^2+b^2}), x∈ R is (1) a^2+2b^2 (2) 2a^2+b^2 (3) a^2+b^2 (4) a^2-b^2
Answer» The largest value in the range of f(x)=2(a-x)(x+\sqrt{x^2+b^2}), x∈ R is (1) a^2+2b^2 (2) 2a^2+b^2 (3) a^2+b^2 (4) a^2-b^2