defence exam Agniveer Vayu Group X & XY Mock Test 01/2026 Mathematics Differential Calculus Applications of Derivatives
Let f(x) be a twice differentiable fucntion such that f ''(x) < 0 in [1, 3]. Which among the following is true?
1
f(3) + f(1) < 2f(2)
2
f(3) - f(1) < 2f(2)
3
f(3) + f(1) > 2f(2)
4
f(3) + f(2) < 2f(1)