Let f be a twice-differentiable function for all real numbers x. which of the following additional properties guarantees that f had a relative minimum at x=c?
(a) f’(c) = 0
(b) f’(c) = 0 and f”(c) < 0
(c) f’(c) = 0 and f”(c) > 0
(d) f’(x) > 0 for x < c and f’(x) < 0 for x > c

*the answer is not b*

(C) f’(c) = 0 and f”(c) > 0

Step-by-step explanation:

A minimum occurs where the first derivative is 0 (the tangent line is horizontal), and the second derivative is positive (concave up).  The simplest example of this is a positive parabola, like y = x², which has a relative minimum at its vertex.

109 trust me

step-by-step explanation:

given hc ∥ gd.¯¯¯¯¯¯which statement is true

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∠cbe and ∠deb are same-side interior angles