engineering recuitment AAI ATC Junior Executive 2025 Mock Test Series Mathematics Differential Calculus Applications of Derivatives
The function f(x) = 1 - x - x3 is decreasing for
1
x ≥ \(\frac {-1} 3\)
2
x < \(\frac {-1} 3\)
3
x > 1
4
All values of x