1.

f(x) is cubic polynomial which has local maximum at x = -1. If f(2) = 18, f(1) = -1 and f'(x) has local minima at x= 0, then (A) the distance between (-1,2) and (a, f(a)), where x =a is the point of local minima is 2sqrt5. (B) f(x) is increasing for xin[1,2sqrt5]. (C) f(x) has local minima at x=1. (D) the value of f(0)= 5.

Answer»

the distance between (-1,2) and (a, F(a)), where x = a is the point of LOCAL MINIMA iis 2 sqrt5
f(x) is increasing for `xin[1,2sqrt5]`
f(x) has local minima at x = 1
the VALUE of f(0) = 5

Answer :A::B::C::D


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