Teaching TN TRB EC Mock Test Engineering Mathematics Calculus

The derivative f’(x) of a function f(x) is positive or zero in (a,b) without being zero always. Then in (a, b):

1
f(b) < f(a)
2
f(b) > f(a)
3
f(b) – f(a) = f’(c), c ϵ (a,b)
4
f(b) = f(a)
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